Simplify the code for most linters and tests with closures

ale_linters/asm/gcc.vim

@@ -4,13 +4,8 @@
 call ale#Set('asm_gcc_executable', 'gcc')
 call ale#Set('asm_gcc_options', '-Wall')
 
-function! ale_linters#asm#gcc#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'asm_gcc_executable')
-endfunction
-
 function! ale_linters#asm#gcc#GetCommand(buffer) abort
-    return ale#Escape(ale_linters#asm#gcc#GetExecutable(a:buffer))
+    return '%e -x assembler -fsyntax-only '
-    \    . ' -x assembler -fsyntax-only '
     \   . '-iquote ' . ale#Escape(fnamemodify(bufname(a:buffer), ':p:h'))
     \   . ' ' . ale#Var(a:buffer, 'asm_gcc_options') . ' -'
 endfunction
@@ -33,7 +28,7 @@ endfunction
 call ale#linter#Define('asm', {
 \    'name': 'gcc',
 \    'output_stream': 'stderr',
-\    'executable_callback': 'ale_linters#asm#gcc#GetExecutable',
+\    'executable_callback': ale#VarFunc('asm_gcc_executable'),
 \    'command_callback': 'ale_linters#asm#gcc#GetCommand',
 \    'callback': 'ale_linters#asm#gcc#Handle',
 \})

ale_linters/awk/gawk.vim

@@ -1,29 +1,21 @@
 " Author: kmarc <korondi.mark@gmail.com>
 " Description: This file adds support for using GNU awk with sripts.
 
-let g:ale_awk_gawk_executable =
+call ale#Set('awk_gawk_executable', 'gawk')
-\   get(g:, 'ale_awk_gawk_executable', 'gawk')
+call ale#Set('awk_gawk_options', '')
-
-let g:ale_awk_gawk_options =
-\   get(g:, 'ale_awk_gawk_options', '')
-
-function! ale_linters#awk#gawk#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'awk_gawk_executable')
-endfunction
 
 function! ale_linters#awk#gawk#GetCommand(buffer) abort
     " note the --source 'BEGIN ...' is to prevent
     " gawk from attempting to execute the body of the script
     " it is linting.
-    return ale#Escape(ale_linters#awk#gawk#GetExecutable(a:buffer))
+    return '%e --source ' . ale#Escape('BEGIN { exit } END { exit 1 }')
-    \   . " --source 'BEGIN { exit } END { exit 1 }'"
     \   .  ale#Pad(ale#Var(a:buffer, 'awk_gawk_options'))
-    \   . ' ' . '-f %t --lint /dev/null'
+    \   . ' -f %t --lint /dev/null'
 endfunction
 
 call ale#linter#Define('awk', {
 \   'name': 'gawk',
-\   'executable_callback': 'ale_linters#awk#gawk#GetExecutable',
+\   'executable_callback': ale#VarFunc('awk_gawk_executable'),
 \   'command_callback': 'ale_linters#awk#gawk#GetCommand',
 \   'callback': 'ale#handlers#gawk#HandleGawkFormat',
 \   'output_stream': 'both'

ale_linters/c/clang.vim

@@ -4,17 +4,12 @@
 call ale#Set('c_clang_executable', 'clang')
 call ale#Set('c_clang_options', '-std=c11 -Wall')
 
-function! ale_linters#c#clang#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'c_clang_executable')
-endfunction
-
 function! ale_linters#c#clang#GetCommand(buffer, output) abort
     let l:cflags = ale#c#GetCFlags(a:buffer, a:output)
 
     " -iquote with the directory the file is in makes #include work for
     "  headers in the same directory.
-    return ale#Escape(ale_linters#c#clang#GetExecutable(a:buffer))
+    return '%e -S -x c -fsyntax-only'
-    \   . ' -S -x c -fsyntax-only'
     \   . ' -iquote ' . ale#Escape(fnamemodify(bufname(a:buffer), ':p:h'))
     \   . ale#Pad(l:cflags)
     \   . ale#Pad(ale#Var(a:buffer, 'c_clang_options')) . ' -'
@@ -23,7 +18,7 @@ endfunction
 call ale#linter#Define('c', {
 \   'name': 'clang',
 \   'output_stream': 'stderr',
-\   'executable_callback': 'ale_linters#c#clang#GetExecutable',
+\   'executable_callback': ale#VarFunc('c_clang_executable'),
 \   'command_chain': [
 \       {'callback': 'ale#c#GetMakeCommand', 'output_stream': 'stdout'},
 \       {'callback': 'ale_linters#c#clang#GetCommand'}

ale_linters/c/clangd.vim

@@ -9,21 +9,14 @@ function! ale_linters#c#clangd#GetProjectRoot(buffer) abort
     return !empty(l:project_root) ? fnamemodify(l:project_root, ':h') : ''
 endfunction
 
-function! ale_linters#c#clangd#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'c_clangd_executable')
-endfunction
-
 function! ale_linters#c#clangd#GetCommand(buffer) abort
-    let l:executable = ale_linters#c#clangd#GetExecutable(a:buffer)
+    return '%e' . ale#Pad(ale#Var(a:buffer, 'c_clangd_options'))
-    let l:options = ale#Var(a:buffer, 'c_clangd_options')
-
-    return ale#Escape(l:executable) . (!empty(l:options) ? ' ' . l:options : '')
 endfunction
 
 call ale#linter#Define('c', {
 \   'name': 'clangd',
 \   'lsp': 'stdio',
-\   'executable_callback': 'ale_linters#c#clangd#GetExecutable',
+\   'executable_callback': ale#VarFunc('c_clangd_executable'),
 \   'command_callback': 'ale_linters#c#clangd#GetCommand',
 \   'project_root_callback': 'ale_linters#c#clangd#GetProjectRoot',
 \})

ale_linters/c/clangtidy.vim

@@ -16,10 +16,6 @@ call ale#Set('c_clangtidy_checks', ['*'])
 call ale#Set('c_clangtidy_options', '')
 call ale#Set('c_build_dir', '')
 
-function! ale_linters#c#clangtidy#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'c_clangtidy_executable')
-endfunction
-
 function! s:GetBuildDirectory(buffer) abort
     " Don't include build directory for header files, as compile_commands.json
     " files don't consider headers to be translation units, and provide no
@@ -47,7 +43,7 @@ function! ale_linters#c#clangtidy#GetCommand(buffer) abort
     \   ? ale#Var(a:buffer, 'c_clangtidy_options')
     \   : ''
 
-    return ale#Escape(ale_linters#c#clangtidy#GetExecutable(a:buffer))
+    return '%e'
     \   . (!empty(l:checks) ? ' -checks=' . ale#Escape(l:checks) : '')
     \   . ' %s'
     \   . (!empty(l:build_dir) ? ' -p ' . ale#Escape(l:build_dir) : '')
@@ -57,7 +53,7 @@ endfunction
 call ale#linter#Define('c', {
 \   'name': 'clangtidy',
 \   'output_stream': 'stdout',
-\   'executable_callback': 'ale_linters#c#clangtidy#GetExecutable',
+\   'executable_callback': ale#VarFunc('c_clangtidy_executable'),
 \   'command_callback': 'ale_linters#c#clangtidy#GetCommand',
 \   'callback': 'ale#handlers#gcc#HandleGCCFormat',
 \   'lint_file': 1,

ale_linters/c/cppcheck.vim

@@ -4,10 +4,6 @@
 call ale#Set('c_cppcheck_executable', 'cppcheck')
 call ale#Set('c_cppcheck_options', '--enable=style')
 
-function! ale_linters#c#cppcheck#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'c_cppcheck_executable')
-endfunction
-
 function! ale_linters#c#cppcheck#GetCommand(buffer) abort
     " Search upwards from the file for compile_commands.json.
     "
@@ -23,8 +19,7 @@ function! ale_linters#c#cppcheck#GetCommand(buffer) abort
     \   : ''
 
     return l:cd_command
-    \   . ale#Escape(ale_linters#c#cppcheck#GetExecutable(a:buffer))
+    \   . '%e -q --language=c '
-    \   . ' -q --language=c '
     \   . l:compile_commands_option
     \   . ale#Var(a:buffer, 'c_cppcheck_options')
     \   . ' %t'
@@ -33,7 +28,7 @@ endfunction
 call ale#linter#Define('c', {
 \   'name': 'cppcheck',
 \   'output_stream': 'both',
-\   'executable_callback': 'ale_linters#c#cppcheck#GetExecutable',
+\   'executable_callback': ale#VarFunc('c_cppcheck_executable'),
 \   'command_callback': 'ale_linters#c#cppcheck#GetCommand',
 \   'callback': 'ale#handlers#cppcheck#HandleCppCheckFormat',
 \})

ale_linters/c/cquery.vim

@@ -9,15 +9,6 @@ function! ale_linters#c#cquery#GetProjectRoot(buffer) abort
     return !empty(l:project_root) ? fnamemodify(l:project_root, ':h') : ''
 endfunction
 
-function! ale_linters#c#cquery#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'c_cquery_executable')
-endfunction
-
-function! ale_linters#c#cquery#GetCommand(buffer) abort
-    let l:executable = ale_linters#c#cquery#GetExecutable(a:buffer)
-    return ale#Escape(l:executable)
-endfunction
-
 function! ale_linters#c#cquery#GetInitializationOptions(buffer) abort
     return {'cacheDirectory': ale#Var(a:buffer, 'c_cquery_cache_directory')}
 endfunction
@@ -25,8 +16,8 @@ endfunction
 call ale#linter#Define('c', {
 \   'name': 'cquery',
 \   'lsp': 'stdio',
-\   'executable_callback': 'ale_linters#c#cquery#GetExecutable',
+\   'executable_callback': ale#VarFunc('c_cquery_executable'),
-\   'command_callback': 'ale_linters#c#cquery#GetCommand',
+\   'command': '%e',
 \   'project_root_callback': 'ale_linters#c#cquery#GetProjectRoot',
 \   'initialization_options_callback': 'ale_linters#c#cquery#GetInitializationOptions',
 \})

ale_linters/c/flawfinder.vim

@@ -6,18 +6,12 @@ call ale#Set('c_flawfinder_options', '')
 call ale#Set('c_flawfinder_minlevel', 1)
 call ale#Set('c_flawfinder_error_severity', 6)
 
-function! ale_linters#c#flawfinder#GetExecutable(buffer) abort
-   return ale#Var(a:buffer, 'c_flawfinder_executable')
-endfunction
-
 function! ale_linters#c#flawfinder#GetCommand(buffer) abort
-
    " Set the minimum vulnerability level for flawfinder to bother with
    let l:minlevel = ' --minlevel=' . ale#Var(a:buffer, 'c_flawfinder_minlevel')
 
-   return ale#Escape(ale_linters#c#flawfinder#GetExecutable(a:buffer))
+   return '%e -CDQS'
-   \  . ' -CDQS'
+   \  . ale#Pad(ale#Var(a:buffer, 'c_flawfinder_options'))
-   \  . ale#Var(a:buffer, 'c_flawfinder_options')
    \  . l:minlevel
    \  . ' %t'
 endfunction
@@ -25,7 +19,7 @@ endfunction
 call ale#linter#Define('c', {
 \  'name': 'flawfinder',
 \  'output_stream': 'stdout',
-\  'executable_callback': 'ale_linters#c#flawfinder#GetExecutable',
+\  'executable_callback': ale#VarFunc('c_flawfinder_executable'),
 \  'command_callback': 'ale_linters#c#flawfinder#GetCommand',
 \  'callback': 'ale#handlers#flawfinder#HandleFlawfinderFormat',
 \})

ale_linters/c/gcc.vim

@@ -4,17 +4,12 @@
 call ale#Set('c_gcc_executable', 'gcc')
 call ale#Set('c_gcc_options', '-std=c11 -Wall')
 
-function! ale_linters#c#gcc#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'c_gcc_executable')
-endfunction
-
 function! ale_linters#c#gcc#GetCommand(buffer, output) abort
     let l:cflags = ale#c#GetCFlags(a:buffer, a:output)
 
     " -iquote with the directory the file is in makes #include work for
     "  headers in the same directory.
-    return ale#Escape(ale_linters#c#gcc#GetExecutable(a:buffer))
+    return '%e -S -x c -fsyntax-only'
-    \   . ' -S -x c -fsyntax-only'
     \   . ' -iquote ' . ale#Escape(fnamemodify(bufname(a:buffer), ':p:h'))
     \   . ale#Pad(l:cflags)
     \   . ale#Pad(ale#Var(a:buffer, 'c_gcc_options')) . ' -'
@@ -23,7 +18,7 @@ endfunction
 call ale#linter#Define('c', {
 \   'name': 'gcc',
 \   'output_stream': 'stderr',
-\   'executable_callback': 'ale_linters#c#gcc#GetExecutable',
+\   'executable_callback': ale#VarFunc('c_gcc_executable'),
 \   'command_chain': [
 \       {'callback': 'ale#c#GetMakeCommand', 'output_stream': 'stdout'},
 \       {'callback': 'ale_linters#c#gcc#GetCommand'}

ale_linters/chef/foodcritic.vim

@@ -6,17 +6,10 @@
 call ale#Set('chef_foodcritic_executable', 'foodcritic')
 call ale#Set('chef_foodcritic_options', '')
 
-function! ale_linters#chef#foodcritic#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'chef_foodcritic_executable')
-endfunction
-
 function! ale_linters#chef#foodcritic#GetCommand(buffer) abort
-    let l:executable = ale_linters#chef#foodcritic#GetExecutable(a:buffer)
     let l:options = ale#Var(a:buffer, 'chef_foodcritic_options')
 
-    return ale#Escape(l:executable)
+    return '%e' . ale#Pad(escape(l:options, '~')) . ' %s'
-    \   . (!empty(l:options) ? ' ' . escape(l:options, '~') : '')
-    \   . ' %s'
 endfunction
 
 function! ale_linters#chef#foodcritic#Handle(buffer, lines) abort
@@ -41,7 +34,7 @@ endfunction
 
 call ale#linter#Define('chef', {
 \   'name': 'foodcritic',
-\   'executable_callback': 'ale_linters#chef#foodcritic#GetExecutable',
+\   'executable_callback': ale#VarFunc('chef_foodcritic_executable'),
 \   'command_callback': 'ale_linters#chef#foodcritic#GetCommand',
 \   'callback': 'ale_linters#chef#foodcritic#Handle',
 \   'lint_file': 1,

ale_linters/cpp/clang.vim

@@ -4,17 +4,12 @@
 call ale#Set('cpp_clang_executable', 'clang++')
 call ale#Set('cpp_clang_options', '-std=c++14 -Wall')
 
-function! ale_linters#cpp#clang#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'cpp_clang_executable')
-endfunction
-
 function! ale_linters#cpp#clang#GetCommand(buffer, output) abort
     let l:cflags = ale#c#GetCFlags(a:buffer, a:output)
 
     " -iquote with the directory the file is in makes #include work for
     "  headers in the same directory.
-    return ale#Escape(ale_linters#cpp#clang#GetExecutable(a:buffer))
+    return '%e -S -x c++ -fsyntax-only'
-    \   . ' -S -x c++ -fsyntax-only'
     \   . ' -iquote ' . ale#Escape(fnamemodify(bufname(a:buffer), ':p:h'))
     \   . ale#Pad(l:cflags)
     \   . ale#Pad(ale#Var(a:buffer, 'cpp_clang_options')) . ' -'
@@ -23,7 +18,7 @@ endfunction
 call ale#linter#Define('cpp', {
 \   'name': 'clang',
 \   'output_stream': 'stderr',
-\   'executable_callback': 'ale_linters#cpp#clang#GetExecutable',
+\   'executable_callback': ale#VarFunc('cpp_clang_executable'),
 \   'command_chain': [
 \       {'callback': 'ale#c#GetMakeCommand', 'output_stream': 'stdout'},
 \       {'callback': 'ale_linters#cpp#clang#GetCommand'},

ale_linters/cpp/clangcheck.vim

@@ -5,10 +5,6 @@ call ale#Set('cpp_clangcheck_executable', 'clang-check')
 call ale#Set('cpp_clangcheck_options', '')
 call ale#Set('c_build_dir', '')
 
-function! ale_linters#cpp#clangcheck#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'cpp_clangcheck_executable')
-endfunction
-
 function! ale_linters#cpp#clangcheck#GetCommand(buffer) abort
     let l:user_options = ale#Var(a:buffer, 'cpp_clangcheck_options')
 
@@ -22,17 +18,16 @@ function! ale_linters#cpp#clangcheck#GetCommand(buffer) abort
     " The extra arguments in the command are used to prevent .plist files from
     " being generated. These are only added if no build directory can be
     " detected.
-    return ale#Escape(ale_linters#cpp#clangcheck#GetExecutable(a:buffer))
+    return '%e -analyze %s'
-    \   . ' -analyze %s'
     \   . (empty(l:build_dir) ? ' -extra-arg -Xclang -extra-arg -analyzer-output=text' : '')
-    \   . (!empty(l:user_options) ? ' ' . l:user_options : '')
+    \   . ale#Pad(l:user_options)
     \   . (!empty(l:build_dir) ? ' -p ' . ale#Escape(l:build_dir) : '')
 endfunction
 
 call ale#linter#Define('cpp', {
 \   'name': 'clangcheck',
 \   'output_stream': 'stderr',
-\   'executable_callback': 'ale_linters#cpp#clangcheck#GetExecutable',
+\   'executable_callback': ale#VarFunc('cpp_clangcheck_executable'),
 \   'command_callback': 'ale_linters#cpp#clangcheck#GetCommand',
 \   'callback': 'ale#handlers#gcc#HandleGCCFormat',
 \   'lint_file': 1,

ale_linters/cpp/clangtidy.vim

@@ -10,10 +10,6 @@ call ale#Set('cpp_clangtidy_checks', ['*'])
 call ale#Set('cpp_clangtidy_options', '')
 call ale#Set('c_build_dir', '')
 
-function! ale_linters#cpp#clangtidy#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'cpp_clangtidy_executable')
-endfunction
-
 function! s:GetBuildDirectory(buffer) abort
     " Don't include build directory for header files, as compile_commands.json
     " files don't consider headers to be translation units, and provide no
@@ -41,7 +37,7 @@ function! ale_linters#cpp#clangtidy#GetCommand(buffer) abort
     \   ? ale#Var(a:buffer, 'cpp_clangtidy_options')
     \   : ''
 
-    return ale#Escape(ale_linters#cpp#clangtidy#GetExecutable(a:buffer))
+    return '%e'
     \   . (!empty(l:checks) ? ' -checks=' . ale#Escape(l:checks) : '')
     \   . ' %s'
     \   . (!empty(l:build_dir) ? ' -p ' . ale#Escape(l:build_dir) : '')
@@ -51,7 +47,7 @@ endfunction
 call ale#linter#Define('cpp', {
 \   'name': 'clangtidy',
 \   'output_stream': 'stdout',
-\   'executable_callback': 'ale_linters#cpp#clangtidy#GetExecutable',
+\   'executable_callback': ale#VarFunc('cpp_clangtidy_executable'),
 \   'command_callback': 'ale_linters#cpp#clangtidy#GetCommand',
 \   'callback': 'ale#handlers#gcc#HandleGCCFormat',
 \   'lint_file': 1,

ale_linters/cpp/cppcheck.vim

@@ -4,10 +4,6 @@
 call ale#Set('cpp_cppcheck_executable', 'cppcheck')
 call ale#Set('cpp_cppcheck_options', '--enable=style')
 
-function! ale_linters#cpp#cppcheck#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'cpp_cppcheck_executable')
-endfunction
-
 function! ale_linters#cpp#cppcheck#GetCommand(buffer) abort
     " Search upwards from the file for compile_commands.json.
     "
@@ -23,8 +19,7 @@ function! ale_linters#cpp#cppcheck#GetCommand(buffer) abort
     \   : ''
 
     return l:cd_command
-    \   . ale#Escape(ale_linters#cpp#cppcheck#GetExecutable(a:buffer))
+    \   . '%e -q --language=c++ '
-    \   . ' -q --language=c++ '
     \   . l:compile_commands_option
     \   . ale#Var(a:buffer, 'cpp_cppcheck_options')
     \   . ' %t'
@@ -33,7 +28,7 @@ endfunction
 call ale#linter#Define('cpp', {
 \   'name': 'cppcheck',
 \   'output_stream': 'both',
-\   'executable_callback': 'ale_linters#cpp#cppcheck#GetExecutable',
+\   'executable_callback': ale#VarFunc('cpp_cppcheck_executable'),
 \   'command_callback': 'ale_linters#cpp#cppcheck#GetCommand',
 \   'callback': 'ale#handlers#cppcheck#HandleCppCheckFormat',
 \})

ale_linters/cpp/cpplint.vim

@@ -4,22 +4,16 @@
 call ale#Set('cpp_cpplint_executable', 'cpplint')
 call ale#Set('cpp_cpplint_options', '')
 
-function! ale_linters#cpp#cpplint#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'cpp_cpplint_executable')
-endfunction
-
 function! ale_linters#cpp#cpplint#GetCommand(buffer) abort
     let l:options = ale#Var(a:buffer, 'cpp_cpplint_options')
 
-    return ale#Escape(ale_linters#cpp#cpplint#GetExecutable(a:buffer))
+    return '%e' . ale#Pad(l:options) . ' %s'
-    \   . (!empty(l:options) ? ' ' . l:options : '')
-    \   . ' %s'
 endfunction
 
 call ale#linter#Define('cpp', {
 \   'name': 'cpplint',
 \   'output_stream': 'stderr',
-\   'executable_callback': 'ale_linters#cpp#cpplint#GetExecutable',
+\   'executable_callback': ale#VarFunc('cpp_cpplint_executable'),
 \   'command_callback': 'ale_linters#cpp#cpplint#GetCommand',
 \   'callback': 'ale#handlers#cpplint#HandleCppLintFormat',
 \   'lint_file': 1,

ale_linters/cpp/cquery.vim

@@ -10,15 +10,6 @@ function! ale_linters#cpp#cquery#GetProjectRoot(buffer) abort
     return !empty(l:project_root) ? fnamemodify(l:project_root, ':h') : ''
 endfunction
 
-function! ale_linters#cpp#cquery#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'cpp_cquery_executable')
-endfunction
-
-function! ale_linters#cpp#cquery#GetCommand(buffer) abort
-    let l:executable = ale_linters#cpp#cquery#GetExecutable(a:buffer)
-    return ale#Escape(l:executable)
-endfunction
-
 function! ale_linters#cpp#cquery#GetInitializationOptions(buffer) abort
     return {'cacheDirectory': ale#Var(a:buffer, 'cpp_cquery_cache_directory')}
 endfunction
@@ -26,8 +17,8 @@ endfunction
 call ale#linter#Define('cpp', {
 \   'name': 'cquery',
 \   'lsp': 'stdio',
-\   'executable_callback': 'ale_linters#cpp#cquery#GetExecutable',
+\   'executable_callback': ale#VarFunc('cpp_cquery_executable'),
-\   'command_callback': 'ale_linters#cpp#cquery#GetCommand',
+\   'command': '%e',
 \   'project_root_callback': 'ale_linters#cpp#cquery#GetProjectRoot',
 \   'initialization_options_callback': 'ale_linters#cpp#cquery#GetInitializationOptions',
 \})

ale_linters/cpp/flawfinder.vim

@@ -6,17 +6,11 @@ call ale#Set('cpp_flawfinder_options', '')
 call ale#Set('cpp_flawfinder_minlevel', 1)
 call ale#Set('c_flawfinder_error_severity', 6)
 
-function! ale_linters#cpp#flawfinder#GetExecutable(buffer) abort
-   return ale#Var(a:buffer, 'cpp_flawfinder_executable')
-endfunction
-
 function! ale_linters#cpp#flawfinder#GetCommand(buffer) abort
-
    " Set the minimum vulnerability level for flawfinder to bother with
    let l:minlevel = ' --minlevel=' . ale#Var(a:buffer, 'cpp_flawfinder_minlevel')
 
-   return ale#Escape(ale_linters#cpp#flawfinder#GetExecutable(a:buffer))
+   return '%e -CDQS'
-   \  . ' -CDQS'
    \  . ale#Var(a:buffer, 'cpp_flawfinder_options')
    \  . l:minlevel
    \  . ' %t'
@@ -25,7 +19,7 @@ endfunction
 call ale#linter#Define('cpp', {
 \  'name': 'flawfinder',
 \  'output_stream': 'stdout',
-\  'executable_callback': 'ale_linters#cpp#flawfinder#GetExecutable',
+\  'executable_callback': ale#VarFunc('cpp_flawfinder_executable'),
 \  'command_callback': 'ale_linters#cpp#flawfinder#GetCommand',
 \  'callback': 'ale#handlers#flawfinder#HandleFlawfinderFormat',
 \})

ale_linters/cpp/gcc.vim

@@ -4,17 +4,12 @@
 call ale#Set('cpp_gcc_executable', 'gcc')
 call ale#Set('cpp_gcc_options', '-std=c++14 -Wall')
 
-function! ale_linters#cpp#gcc#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'cpp_gcc_executable')
-endfunction
-
 function! ale_linters#cpp#gcc#GetCommand(buffer, output) abort
     let l:cflags = ale#c#GetCFlags(a:buffer, a:output)
 
     " -iquote with the directory the file is in makes #include work for
     "  headers in the same directory.
-    return ale#Escape(ale_linters#cpp#gcc#GetExecutable(a:buffer))
+    return '%e -S -x c++ -fsyntax-only'
-    \   . ' -S -x c++ -fsyntax-only'
     \   . ' -iquote ' . ale#Escape(fnamemodify(bufname(a:buffer), ':p:h'))
     \   . ale#Pad(l:cflags)
     \   . ale#Pad(ale#Var(a:buffer, 'cpp_gcc_options')) . ' -'
@@ -24,7 +19,7 @@ call ale#linter#Define('cpp', {
 \   'name': 'gcc',
 \   'aliases': ['g++'],
 \   'output_stream': 'stderr',
-\   'executable_callback': 'ale_linters#cpp#gcc#GetExecutable',
+\   'executable_callback': ale#VarFunc('cpp_gcc_executable'),
 \   'command_chain': [
 \       {'callback': 'ale#c#GetMakeCommand', 'output_stream': 'stdout'},
 \       {'callback': 'ale_linters#cpp#gcc#GetCommand'},

ale_linters/css/stylelint.vim

@@ -4,21 +4,16 @@ call ale#Set('css_stylelint_executable', 'stylelint')
 call ale#Set('css_stylelint_options', '')
 call ale#Set('css_stylelint_use_global', get(g:, 'ale_use_global_executables', 0))
 
-function! ale_linters#css#stylelint#GetExecutable(buffer) abort
-    return ale#node#FindExecutable(a:buffer, 'css_stylelint', [
-    \   'node_modules/.bin/stylelint',
-    \])
-endfunction
-
 function! ale_linters#css#stylelint#GetCommand(buffer) abort
-    return ale_linters#css#stylelint#GetExecutable(a:buffer)
+    return '%e ' . ale#Pad(ale#Var(a:buffer, 'css_stylelint_options'))
-    \   . ' ' . ale#Var(a:buffer, 'css_stylelint_options')
     \   . ' --stdin-filename %s'
 endfunction
 
 call ale#linter#Define('css', {
 \   'name': 'stylelint',
-\   'executable_callback': 'ale_linters#css#stylelint#GetExecutable',
+\   'executable_callback': ale#node#FindExecutableFunc('css_stylelint', [
+\       'node_modules/.bin/stylelint',
+\   ]),
 \   'command_callback': 'ale_linters#css#stylelint#GetCommand',
 \   'callback': 'ale#handlers#css#HandleStyleLintFormat',
 \})

ale_linters/cuda/nvcc.vim

@@ -4,20 +4,15 @@
 call ale#Set('cuda_nvcc_executable', 'nvcc')
 call ale#Set('cuda_nvcc_options', '-std=c++11')
 
-function! ale_linters#cuda#nvcc#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'cuda_nvcc_executable')
-endfunction
-
 function! ale_linters#cuda#nvcc#GetCommand(buffer) abort
     " Unused: use ale#util#nul_file
     " let l:output_file = ale#util#Tempname() . '.ii'
     " call ale#engine#ManageFile(a:buffer, l:output_file)
 
-    return ale#Escape(ale_linters#cuda#nvcc#GetExecutable(a:buffer))
+    return '%e -cuda'
-    \   . ' -cuda '
+    \   . ale#Pad(ale#c#IncludeOptions(ale#c#FindLocalHeaderPaths(a:buffer)))
-    \   . ale#c#IncludeOptions(ale#c#FindLocalHeaderPaths(a:buffer))
+    \   . ale#Pad(ale#Var(a:buffer, 'cuda_nvcc_options'))
-    \   . ale#Var(a:buffer, 'cuda_nvcc_options') . ' %s'
+    \   . ' %s -o ' . g:ale#util#nul_file
-    \   . ' -o ' . g:ale#util#nul_file
 endfunction
 
 function! ale_linters#cuda#nvcc#HandleNVCCFormat(buffer, lines) abort
@@ -49,7 +44,7 @@ endfunction
 call ale#linter#Define('cuda', {
 \   'name': 'nvcc',
 \   'output_stream': 'stderr',
-\   'executable_callback': 'ale_linters#cuda#nvcc#GetExecutable',
+\   'executable_callback': ale#VarFunc('cuda_nvcc_executable'),
 \   'command_callback': 'ale_linters#cuda#nvcc#GetCommand',
 \   'callback': 'ale_linters#cuda#nvcc#HandleNVCCFormat',
 \   'lint_file': 1,

ale_linters/dart/dartanalyzer.vim

@@ -3,15 +3,10 @@
 
 call ale#Set('dart_dartanalyzer_executable', 'dartanalyzer')
 
-function! ale_linters#dart#dartanalyzer#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'dart_dartanalyzer_executable')
-endfunction
-
 function! ale_linters#dart#dartanalyzer#GetCommand(buffer) abort
-    let l:executable = ale_linters#dart#dartanalyzer#GetExecutable(a:buffer)
     let l:path = ale#path#FindNearestFile(a:buffer, '.packages')
 
-    return ale#Escape(l:executable)
+    return '%e'
     \   . (!empty(l:path) ? ' --packages ' . ale#Escape(l:path) : '')
     \   . ' %s'
 endfunction
@@ -34,7 +29,7 @@ endfunction
 
 call ale#linter#Define('dart', {
 \   'name': 'dartanalyzer',
-\   'executable_callback': 'ale_linters#dart#dartanalyzer#GetExecutable',
+\   'executable_callback': ale#VarFunc('dart_dartanalyzer_executable'),
 \   'command_callback': 'ale_linters#dart#dartanalyzer#GetCommand',
 \   'callback': 'ale_linters#dart#dartanalyzer#Handle',
 \   'lint_file': 1,

ale_linters/dart/language_server.vim

@@ -3,10 +3,6 @@
 
 call ale#Set('dart_language_server_executable', 'dart_language_server')
 
-function! ale_linters#dart#language_server#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'dart_language_server_executable')
-endfunction
-
 function! ale_linters#dart#language_server#GetProjectRoot(buffer) abort
     " Note: pub only looks for pubspec.yaml, there's no point in adding
     " support for pubspec.yml
@@ -18,7 +14,7 @@ endfunction
 call ale#linter#Define('dart', {
 \   'name': 'language_server',
 \   'lsp': 'stdio',
-\   'executable_callback': 'ale_linters#dart#language_server#GetExecutable',
+\   'executable_callback': ale#VarFunc('dart_language_server_executable'),
 \   'command_callback': 'ale_linters#dart#language_server#GetExecutable',
 \   'project_root_callback': 'ale_linters#dart#language_server#GetProjectRoot',
 \})

ale_linters/elm/make.vim

@@ -4,12 +4,6 @@
 call ale#Set('elm_make_executable', 'elm')
 call ale#Set('elm_make_use_global', get(g:, 'ale_use_global_executables', 0))
 
-function! ale_linters#elm#make#GetExecutable(buffer) abort
-    return ale#node#FindExecutable(a:buffer, 'elm_make', [
-    \   'node_modules/.bin/elm',
-    \])
-endfunction
-
 function! ale_linters#elm#make#Handle(buffer, lines) abort
     let l:output = []
     let l:unparsed_lines = []
@@ -147,7 +141,6 @@ endfunction
 " If it doesn't, then this will fail when imports are needed.
 function! ale_linters#elm#make#GetCommand(buffer) abort
     let l:elm_json = ale#path#FindNearestFile(a:buffer, 'elm.json')
-    let l:elm_exe = ale_linters#elm#make#GetExecutable(a:buffer)
 
     if empty(l:elm_json)
         " Fallback to Elm 0.18
@@ -165,17 +158,14 @@ function! ale_linters#elm#make#GetCommand(buffer) abort
     " a sort of flag to tell the compiler not to generate an output file,
     " which is why this is hard coded here.
     " Source: https://github.com/elm-lang/elm-compiler/blob/19d5a769b30ec0b2fc4475985abb4cd94cd1d6c3/builder/src/Generate/Output.hs#L253
-    let l:elm_cmd = ale#Escape(l:elm_exe)
+    return l:dir_set_cmd . '%e make --report=json --output=/dev/null %t'
-    \   . ' make'
-    \   . ' --report=json'
-    \   . ' --output=/dev/null'
-
-    return l:dir_set_cmd . ' ' . l:elm_cmd . ' %t'
 endfunction
 
 call ale#linter#Define('elm', {
 \   'name': 'make',
-\    'executable_callback': 'ale_linters#elm#make#GetExecutable',
+\   'executable_callback': ale#node#FindExecutableFunc('elm_make', [
+\       'node_modules/.bin/elm',
+\   ]),
 \   'output_stream': 'both',
 \   'command_callback': 'ale_linters#elm#make#GetCommand',
 \   'callback': 'ale_linters#elm#make#Handle'

ale_linters/erlang/syntaxerl.vim

@@ -3,24 +3,12 @@
 
 call ale#Set('erlang_syntaxerl_executable', 'syntaxerl')
 
-
-function! ale_linters#erlang#syntaxerl#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'erlang_syntaxerl_executable')
-endfunction
-
-
-function! ale_linters#erlang#syntaxerl#FeatureCheck(buffer) abort
-    return s:GetEscapedExecutable(a:buffer) . ' -h'
-endfunction
-
-
 function! ale_linters#erlang#syntaxerl#GetCommand(buffer, output) abort
     let l:use_b_option = match(a:output, '\C\V-b, --base\>') > -1
 
-    return s:GetEscapedExecutable(a:buffer) . (l:use_b_option ? ' -b %s %t' : ' %t')
+    return '%e' . (l:use_b_option ? ' -b %s %t' : ' %t')
 endfunction
 
-
 function! ale_linters#erlang#syntaxerl#Handle(buffer, lines) abort
     let l:pattern = '\v\C:(\d+):( warning:)? (.+)'
     let l:loclist = []
@@ -36,17 +24,11 @@ function! ale_linters#erlang#syntaxerl#Handle(buffer, lines) abort
     return l:loclist
 endfunction
 
-
-function! s:GetEscapedExecutable(buffer) abort
-    return ale#Escape(ale_linters#erlang#syntaxerl#GetExecutable(a:buffer))
-endfunction
-
-
 call ale#linter#Define('erlang', {
 \   'name': 'syntaxerl',
-\   'executable_callback': 'ale_linters#erlang#syntaxerl#GetExecutable',
+\   'executable_callback': ale#VarFunc('erlang_syntaxerl_executable'),
 \   'command_chain': [
-\       {'callback': 'ale_linters#erlang#syntaxerl#FeatureCheck'},
+\       {'callback': {-> '%e -h'}},
 \       {'callback': 'ale_linters#erlang#syntaxerl#GetCommand'},
 \   ],
 \   'callback': 'ale_linters#erlang#syntaxerl#Handle',

ale_linters/fortran/gcc.vim

@@ -2,18 +2,10 @@
 " Description: gcc for Fortran files
 
 " This option can be set to 0 to use -ffixed-form
-if !exists('g:ale_fortran_gcc_use_free_form')
+call ale#Set('fortran_gcc_use_free_form', 1)
-    let g:ale_fortran_gcc_use_free_form = 1
+call ale#Set('fortran_gcc_executable', 'gcc')
-endif
-
-if !exists('g:ale_fortran_gcc_executable')
-    let g:ale_fortran_gcc_executable = 'gcc'
-endif
-
 " Set this option to change the GCC options for warnings for Fortran.
-if !exists('g:ale_fortran_gcc_options')
+call ale#Set('fortran_gcc_options', '-Wall')
-    let g:ale_fortran_gcc_options = '-Wall'
-endif
 
 function! ale_linters#fortran#gcc#Handle(buffer, lines) abort
     " We have to match a starting line and a later ending line together,
@@ -61,26 +53,20 @@ function! ale_linters#fortran#gcc#Handle(buffer, lines) abort
     return l:output
 endfunction
 
-function! ale_linters#fortran#gcc#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'fortran_gcc_executable')
-endfunction
-
 function! ale_linters#fortran#gcc#GetCommand(buffer) abort
     let l:layout_option = ale#Var(a:buffer, 'fortran_gcc_use_free_form')
     \   ? '-ffree-form'
     \   : '-ffixed-form'
 
-    return ale_linters#fortran#gcc#GetExecutable(a:buffer)
+    return '%e -S -x f95 -fsyntax-only ' . l:layout_option
-    \   . ' -S -x f95 -fsyntax-only '
+    \   . ale#Pad(ale#Var(a:buffer, 'fortran_gcc_options'))
-    \   . l:layout_option . ' '
-    \   . ale#Var(a:buffer, 'fortran_gcc_options') . ' '
     \   . ' -'
 endfunction
 
 call ale#linter#Define('fortran', {
 \   'name': 'gcc',
 \   'output_stream': 'stderr',
-\   'executable_callback': 'ale_linters#fortran#gcc#GetExecutable',
+\   'executable_callback': ale#VarFunc('fortran_gcc_executable'),
 \   'command_callback': 'ale_linters#fortran#gcc#GetCommand',
 \   'callback': 'ale_linters#fortran#gcc#Handle',
 \})

ale_linters/fortran/language_server.vim

@@ -4,14 +4,6 @@
 call ale#Set('fortran_language_server_executable', 'fortls')
 call ale#Set('fortran_language_server_use_global', get(g:, 'ale_use_global_executables', 0))
 
-function! ale_linters#fortran#language_server#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'fortran_language_server_executable')
-endfunction
-
-function! ale_linters#fortran#language_server#GetCommand(buffer) abort
-    return ale#Escape(ale_linters#fortran#language_server#GetExecutable(a:buffer))
-endfunction
-
 function! ale_linters#fortran#language_server#GetProjectRoot(buffer) abort
     let l:fortls_file = ale#path#FindNearestFile(a:buffer, '.fortls')
 
@@ -21,7 +13,7 @@ endfunction
 call ale#linter#Define('fortran', {
 \   'name': 'language_server',
 \   'lsp': 'stdio',
-\   'executable_callback': 'ale_linters#fortran#language_server#GetExecutable',
+\   'executable_callback': ale#VarFunc('fortran_language_server_executable'),
-\   'command_callback': 'ale_linters#fortran#language_server#GetCommand',
+\   'command': '%e',
 \   'project_root_callback': 'ale_linters#fortran#language_server#GetProjectRoot',
 \})

ale_linters/fuse/fusionlint.vim

@@ -4,13 +4,8 @@
 call ale#Set('fuse_fusionlint_executable', 'fusion-lint')
 call ale#Set('fuse_fusionlint_options', '')
 
-function! ale_linters#fuse#fusionlint#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'fuse_fusionlint_executable')
-endfunction
-
 function! ale_linters#fuse#fusionlint#GetCommand(buffer) abort
-    return ale#Escape(ale_linters#fuse#fusionlint#GetExecutable(a:buffer))
+    return '%e' . ale#Pad(ale#Var(a:buffer, 'fuse_fusionlint_options'))
-    \   . ale#Pad(ale#Var(a:buffer, 'fuse_fusionlint_options'))
     \   . ' --filename %s -i'
 endfunction
 
@@ -32,7 +27,7 @@ endfunction
 
 call ale#linter#Define('fuse', {
 \   'name': 'fusionlint',
-\   'executable_callback': 'ale_linters#fuse#fusionlint#GetExecutable',
+\   'executable_callback': ale#VarFunc('fuse_fusionlint_executable'),
 \   'command_callback': 'ale_linters#fuse#fusionlint#GetCommand',
 \   'callback': 'ale_linters#fuse#fusionlint#Handle',
 \})

ale_linters/gitcommit/gitlint.vim

@@ -1,11 +1,9 @@
 " Author: Nick Yamane <nick.diego@gmail.com>
 " Description: gitlint for git commit message files
 
-let g:ale_gitcommit_gitlint_executable =
+call ale#Set('gitcommit_gitlint_executable', 'gitlint')
-\   get(g:, 'ale_gitcommit_gitlint_executable', 'gitlint')
+call ale#Set('gitcommit_gitlint_options', '')
-let g:ale_gitcommit_gitlint_options = get(g:, 'ale_gitcommit_gitlint_options', '')
+call ale#Set('gitcommit_gitlint_use_global', get(g:, 'ale_use_global_executables', 0))
-let g:ale_gitcommit_gitlint_use_global = get(g:, 'ale_gitcommit_gitlint_use_global', get(g:, 'ale_use_global_executables', 0))
-
 
 function! ale_linters#gitcommit#gitlint#GetExecutable(buffer) abort
     return ale#python#FindExecutable(a:buffer, 'gitcommit_gitlint', ['gitlint'])
@@ -13,12 +11,9 @@ endfunction
 
 function! ale_linters#gitcommit#gitlint#GetCommand(buffer) abort
     let l:options = ale#Var(a:buffer, 'gitcommit_gitlint_options')
-    let l:executable = ale_linters#gitcommit#gitlint#GetExecutable(a:buffer)
-    return ale#Escape(l:executable)
-    \   . (!empty(l:options) ? ' ' . l:options : '')
-    \   . ' lint'
-endfunction
 
+    return '%e' . ale#Pad(l:options) . ' lint'
+endfunction
 
 function! ale_linters#gitcommit#gitlint#Handle(buffer, lines) abort
     " Matches patterns line the following:
@@ -45,7 +40,6 @@ function! ale_linters#gitcommit#gitlint#Handle(buffer, lines) abort
     return l:output
 endfunction
 
-
 call ale#linter#Define('gitcommit', {
 \   'name': 'gitlint',
 \   'output_stream': 'stderr',
@@ -53,4 +47,3 @@ call ale#linter#Define('gitcommit', {
 \   'command_callback': 'ale_linters#gitcommit#gitlint#GetCommand',
 \   'callback': 'ale_linters#gitcommit#gitlint#Handle',
 \})
-

ale_linters/glsl/glslang.vim

@@ -4,17 +4,11 @@
 " TODO: Once https://github.com/KhronosGroup/glslang/pull/1047 is accepted,
 " we can use stdin.
 
-let g:ale_glsl_glslang_executable =
+call ale#Set('glsl_glslang_executable', 'glslangValidator')
-\ get(g:, 'ale_glsl_glslang_executable', 'glslangValidator')
+call ale#Set('glsl_glslang_options', '')
-
-let g:ale_glsl_glslang_options = get(g:, 'ale_glsl_glslang_options', '')
-
-function! ale_linters#glsl#glslang#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'glsl_glslang_executable')
-endfunction
 
 function! ale_linters#glsl#glslang#GetCommand(buffer) abort
-    return ale#Escape(ale_linters#glsl#glslang#GetExecutable(a:buffer))
+    return '%e'
     \   . ale#Pad(ale#Var(a:buffer, 'glsl_glslang_options'))
     \   . ' -C %t'
 endfunction
@@ -40,7 +34,7 @@ endfunction
 
 call ale#linter#Define('glsl', {
 \   'name': 'glslang',
-\   'executable_callback': 'ale_linters#glsl#glslang#GetExecutable',
+\   'executable_callback': ale#VarFunc('glsl_glslang_executable'),
 \   'command_callback': 'ale_linters#glsl#glslang#GetCommand',
 \   'callback': 'ale_linters#glsl#glslang#Handle',
 \})

ale_linters/glsl/glslls.vim

@@ -4,18 +4,15 @@
 call ale#Set('glsl_glslls_executable', 'glslls')
 call ale#Set('glsl_glslls_logfile', '')
 
-function! ale_linters#glsl#glslls#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'glsl_glslls_executable')
-endfunction
-
 function! ale_linters#glsl#glslls#GetCommand(buffer) abort
-    let l:executable = ale_linters#glsl#glslls#GetExecutable(a:buffer)
     let l:logfile = ale#Var(a:buffer, 'glsl_glslls_logfile')
     let l:logfile_args = ''
+
     if l:logfile isnot# ''
         let l:logfile_args = ' --verbose -l ' . l:logfile
     endif
-    return ale#Escape(l:executable) . l:logfile_args . ' --stdin'
+
+    return '%e' . l:logfile_args . ' --stdin'
 endfunction
 
 function! ale_linters#glsl#glslls#GetProjectRoot(buffer) abort
@@ -27,7 +24,7 @@ endfunction
 call ale#linter#Define('glsl', {
 \   'name': 'glslls',
 \   'lsp': 'stdio',
-\   'executable_callback': 'ale_linters#glsl#glslls#GetExecutable',
+\   'executable_callback': ale#VarFunc('glsl_glslls_executable'),
 \   'command_callback': 'ale_linters#glsl#glslls#GetCommand',
 \   'project_root_callback': 'ale_linters#glsl#glslls#GetProjectRoot',
 \})

ale_linters/go/gometalinter.vim

@@ -5,12 +5,7 @@ call ale#Set('go_gometalinter_options', '')
 call ale#Set('go_gometalinter_executable', 'gometalinter')
 call ale#Set('go_gometalinter_lint_package', 0)
 
-function! ale_linters#go#gometalinter#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'go_gometalinter_executable')
-endfunction
-
 function! ale_linters#go#gometalinter#GetCommand(buffer) abort
-    let l:executable = ale_linters#go#gometalinter#GetExecutable(a:buffer)
     let l:filename = expand('#' . a:buffer . ':t')
     let l:options = ale#Var(a:buffer, 'go_gometalinter_options')
     let l:lint_package = ale#Var(a:buffer, 'go_gometalinter_lint_package')
@@ -19,12 +14,12 @@ function! ale_linters#go#gometalinter#GetCommand(buffer) abort
     " be calculated to absolute paths in the Handler
     if l:lint_package
         return ale#path#BufferCdString(a:buffer)
-        \   . ale#Escape(l:executable)
+        \   . '%e'
         \   . (!empty(l:options) ? ' ' . l:options : '') . ' .'
     endif
 
     return ale#path#BufferCdString(a:buffer)
-    \   . ale#Escape(l:executable)
+    \   . '%e'
     \   . ' --include=' . ale#Escape(ale#util#EscapePCRE(l:filename))
     \   . (!empty(l:options) ? ' ' . l:options : '') . ' .'
 endfunction
@@ -55,7 +50,7 @@ endfunction
 
 call ale#linter#Define('go', {
 \   'name': 'gometalinter',
-\   'executable_callback': 'ale_linters#go#gometalinter#GetExecutable',
+\   'executable_callback': ale#VarFunc('go_gometalinter_executable'),
 \   'command_callback': 'ale_linters#go#gometalinter#GetCommand',
 \   'callback': 'ale_linters#go#gometalinter#Handler',
 \   'lint_file': 1,

ale_linters/handlebars/embertemplatelint.vim

@@ -4,17 +4,6 @@
 call ale#Set('handlebars_embertemplatelint_executable', 'ember-template-lint')
 call ale#Set('handlebars_embertemplatelint_use_global', get(g:, 'ale_use_global_executables', 0))
 
-function! ale_linters#handlebars#embertemplatelint#GetExecutable(buffer) abort
-    return ale#node#FindExecutable(a:buffer, 'handlebars_embertemplatelint', [
-    \   'node_modules/.bin/ember-template-lint',
-    \])
-endfunction
-
-function! ale_linters#handlebars#embertemplatelint#GetCommand(buffer) abort
-    return ale_linters#handlebars#embertemplatelint#GetExecutable(a:buffer)
-    \   . ' --json %t'
-endfunction
-
 function! ale_linters#handlebars#embertemplatelint#Handle(buffer, lines) abort
     let l:output = []
     let l:json = ale#util#FuzzyJSONDecode(a:lines, {})
@@ -42,7 +31,9 @@ endfunction
 
 call ale#linter#Define('handlebars', {
 \   'name': 'ember-template-lint',
-\   'executable_callback': 'ale_linters#handlebars#embertemplatelint#GetExecutable',
+\   'executable_callback': ale#node#FindExecutableFunc('handlebars_embertemplatelint', [
-\   'command_callback': 'ale_linters#handlebars#embertemplatelint#GetCommand',
+\       'node_modules/.bin/ember-template-lint',
+\   ]),
+\   'command': '%e --json %t',
 \   'callback': 'ale_linters#handlebars#embertemplatelint#Handle',
 \})

ale_linters/haskell/hdevtools.vim

@@ -4,19 +4,14 @@
 call ale#Set('haskell_hdevtools_executable', 'hdevtools')
 call ale#Set('haskell_hdevtools_options', get(g:, 'hdevtools_options', '-g -Wall'))
 
-function! ale_linters#haskell#hdevtools#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'haskell_hdevtools_executable')
-endfunction
-
 function! ale_linters#haskell#hdevtools#GetCommand(buffer) abort
-    return ale#Escape(ale_linters#haskell#hdevtools#GetExecutable(a:buffer))
+    return '%e check' . ale#Pad(ale#Var(a:buffer, 'haskell_hdevtools_options'))
-        \ . ' check ' . ale#Var(a:buffer, 'haskell_hdevtools_options')
     \ . ' -p %s %t'
 endfunction
 
 call ale#linter#Define('haskell', {
 \   'name': 'hdevtools',
-\   'executable_callback': 'ale_linters#haskell#hdevtools#GetExecutable',
+\   'executable_callback': ale#VarFunc('haskell_hdevtools_executable'),
 \   'command_callback': 'ale_linters#haskell#hdevtools#GetCommand',
 \   'callback': 'ale#handlers#haskell#HandleGHCFormat',
 \})

ale_linters/html/htmlhint.vim

@@ -5,12 +5,6 @@ call ale#Set('html_htmlhint_options', '')
 call ale#Set('html_htmlhint_executable', 'htmlhint')
 call ale#Set('html_htmlhint_use_global', get(g:, 'ale_use_global_executables', 0))
 
-function! ale_linters#html#htmlhint#GetExecutable(buffer) abort
-    return ale#node#FindExecutable(a:buffer, 'html_htmlhint', [
-    \   'node_modules/.bin/htmlhint',
-    \])
-endfunction
-
 function! ale_linters#html#htmlhint#GetCommand(buffer) abort
     let l:options = ale#Var(a:buffer, 'html_htmlhint_options')
     let l:config = l:options !~# '--config'
@@ -25,14 +19,14 @@ function! ale_linters#html#htmlhint#GetCommand(buffer) abort
         let l:options = substitute(l:options, '--format=unix', '', '')
     endif
 
-    return ale#Escape(ale_linters#html#htmlhint#GetExecutable(a:buffer))
+    return '%e' . ale#Pad(l:options) . ' --format=unix %t'
-    \   . (!empty(l:options) ? ' ' . l:options : '')
-    \   . ' --format=unix %t'
 endfunction
 
 call ale#linter#Define('html', {
 \   'name': 'htmlhint',
-\   'executable_callback': 'ale_linters#html#htmlhint#GetExecutable',
+\   'executable_callback': ale#node#FindExecutableFunc('html_htmlhint', [
+\       'node_modules/.bin/htmlhint',
+\   ]),
 \   'command_callback': 'ale_linters#html#htmlhint#GetCommand',
 \   'callback': 'ale#handlers#unix#HandleAsError',
 \})

ale_linters/html/tidy.vim

@@ -37,10 +37,6 @@ function! ale_linters#html#tidy#GetCommand(buffer) abort
     \)
 endfunction
 
-function! ale_linters#html#tidy#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'html_tidy_executable')
-endfunction
-
 function! ale_linters#html#tidy#Handle(buffer, lines) abort
     " Matches patterns lines like the following:
     " line 7 column 5 - Warning: missing </title> before </head>
@@ -67,7 +63,7 @@ endfunction
 
 call ale#linter#Define('html', {
 \   'name': 'tidy',
-\   'executable_callback': 'ale_linters#html#tidy#GetExecutable',
+\   'executable_callback': ale#VarFunc('html_tidy_executable'),
 \   'output_stream': 'stderr',
 \   'command_callback': 'ale_linters#html#tidy#GetCommand',
 \   'callback': 'ale_linters#html#tidy#Handle',

ale_linters/idris/idris.vim

@@ -4,16 +4,10 @@
 call ale#Set('idris_idris_executable', 'idris')
 call ale#Set('idris_idris_options', '--total --warnpartial --warnreach --warnipkg')
 
-function! ale_linters#idris#idris#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'idris_idris_executable')
-endfunction
-
 function! ale_linters#idris#idris#GetCommand(buffer) abort
     let l:options = ale#Var(a:buffer, 'idris_idris_options')
 
-    return ale#Escape(ale_linters#idris#idris#GetExecutable(a:buffer))
+    return '%e' . ale#Pad(l:options) . ' --check %s'
-    \   . (!empty(l:options) ? ' ' . l:options : '')
-    \   . ' --check %s'
 endfunction
 
 function! ale_linters#idris#idris#Handle(buffer, lines) abort
@@ -80,8 +74,7 @@ endfunction
 
 call ale#linter#Define('idris', {
 \   'name': 'idris',
-\   'executable_callback': 'ale_linters#idris#idris#GetExecutable',
+\   'executable_callback': ale#VarFunc('idris_idris_executable'),
 \   'command_callback': 'ale_linters#idris#idris#GetCommand',
 \   'callback': 'ale_linters#idris#idris#Handle',
 \})
-

ale_linters/java/javac.vim

@@ -36,10 +36,6 @@ function! s:BuildClassPathOption(buffer, import_paths) abort
     \   : ''
 endfunction
 
-function! ale_linters#java#javac#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'java_javac_executable')
-endfunction
-
 function! ale_linters#java#javac#GetCommand(buffer, import_paths) abort
     let l:cp_option = s:BuildClassPathOption(a:buffer, a:import_paths)
     let l:sp_option = ''
@@ -77,13 +73,11 @@ function! ale_linters#java#javac#GetCommand(buffer, import_paths) abort
 
     " Create .class files in a temporary directory, which we will delete later.
     let l:class_file_directory = ale#engine#CreateDirectory(a:buffer)
-    let l:executable = ale_linters#java#javac#GetExecutable(a:buffer)
 
     " Always run javac from the directory the file is in, so we can resolve
     " relative paths correctly.
     return ale#path#BufferCdString(a:buffer)
-    \ . ale#Escape(l:executable)
+    \ . '%e -Xlint'
-    \ . ' -Xlint'
     \ . ale#Pad(l:cp_option)
     \ . ale#Pad(l:sp_option)
     \ . ' -d ' . ale#Escape(l:class_file_directory)
@@ -126,7 +120,7 @@ endfunction
 
 call ale#linter#Define('java', {
 \   'name': 'javac',
-\   'executable_callback': 'ale_linters#java#javac#GetExecutable',
+\   'executable_callback': ale#VarFunc('java_javac_executable'),
 \   'command_chain': [
 \       {'callback': 'ale_linters#java#javac#GetImportPaths', 'output_stream': 'stdout'},
 \       {'callback': 'ale_linters#java#javac#GetCommand', 'output_stream': 'stderr'},

ale_linters/javascript/flow_ls.vim

@@ -6,18 +6,6 @@ call ale#Set('javascript_flow_ls_use_global',
 \    get(g:, 'ale_use_global_executables', 0)
 \)
 
-function! ale_linters#javascript#flow_ls#GetExecutable(buffer) abort
-    return ale#node#FindExecutable(a:buffer, 'javascript_flow_ls', [
-    \   'node_modules/.bin/flow',
-    \])
-endfunction
-
-function! ale_linters#javascript#flow_ls#GetCommand(buffer) abort
-    let l:executable = ale_linters#javascript#flow_ls#GetExecutable(a:buffer)
-
-    return ale#Escape(l:executable) . ' lsp --from ale-lsp'
-endfunction
-
 function! ale_linters#javascript#flow_ls#FindProjectRoot(buffer) abort
     let l:flow_config = ale#path#FindNearestFile(a:buffer, '.flowconfig')
 
@@ -31,8 +19,10 @@ endfunction
 call ale#linter#Define('javascript', {
 \   'name': 'flow-language-server',
 \   'lsp': 'stdio',
-\   'executable_callback': 'ale_linters#javascript#flow_ls#GetExecutable',
+\   'executable_callback': ale#node#FindExecutableFunc('javascript_flow_ls', [
-\   'command_callback': 'ale_linters#javascript#flow_ls#GetCommand',
+\       'node_modules/.bin/flow',
+\   ]),
+\   'command': '%e lsp --from ale-lsp',
 \   'project_root_callback': 'ale_linters#javascript#flow_ls#FindProjectRoot',
 \   'language': 'javascript',
 \})

ale_linters/javascript/jscs.vim

@@ -4,12 +4,6 @@
 call ale#Set('javascript_jscs_executable', 'jscs')
 call ale#Set('javascript_jscs_use_global', get(g:, 'ale_use_global_executables', 0))
 
-function! ale_linters#javascript#jscs#GetExecutable(buffer) abort
-    return ale#node#FindExecutable(a:buffer, 'javascript_jscs', [
-    \   'node_modules/.bin/jscs',
-    \])
-endfunction
-
 function! ale_linters#javascript#jscs#GetCommand(buffer) abort
     " Search for a local JShint config locaation, and default to a global one.
     let l:jscs_config = ale#path#ResolveLocalPath(
@@ -18,8 +12,7 @@ function! ale_linters#javascript#jscs#GetCommand(buffer) abort
     \   get(g:, 'ale_jscs_config_loc', '')
     \)
 
-    let l:command = ale#Escape(ale_linters#javascript#jscs#GetExecutable(a:buffer))
+    let l:command = '%e --reporter inline --no-colors'
-    let l:command .= ' --reporter inline --no-colors'
 
     if !empty(l:jscs_config)
         let l:command .= ' --config ' . ale#Escape(l:jscs_config)
@@ -60,8 +53,9 @@ endfunction
 
 call ale#linter#Define('javascript', {
 \   'name': 'jscs',
-\   'executable_callback': 'ale_linters#javascript#jscs#GetExecutable',
+\   'executable_callback': ale#node#FindExecutableFunc('javascript_jscs', [
+\       'node_modules/.bin/jscs',
+\   ]),
 \   'command_callback': 'ale_linters#javascript#jscs#GetCommand',
 \   'callback': 'ale_linters#javascript#jscs#Handle',
 \})
-

ale_linters/javascript/jshint.vim

@@ -4,12 +4,6 @@
 call ale#Set('javascript_jshint_executable', 'jshint')
 call ale#Set('javascript_jshint_use_global', get(g:, 'ale_use_global_executables', 0))
 
-function! ale_linters#javascript#jshint#GetExecutable(buffer) abort
-    return ale#node#FindExecutable(a:buffer, 'javascript_jshint', [
-    \   'node_modules/.bin/jshint',
-    \])
-endfunction
-
 function! ale_linters#javascript#jshint#GetCommand(buffer) abort
     " Search for a local JShint config locaation, and default to a global one.
     let l:jshint_config = ale#path#ResolveLocalPath(
@@ -18,8 +12,7 @@ function! ale_linters#javascript#jshint#GetCommand(buffer) abort
     \   get(g:, 'ale_jshint_config_loc', '')
     \)
 
-    let l:command = ale#Escape(ale_linters#javascript#jshint#GetExecutable(a:buffer))
+    let l:command = '%e --reporter unix --extract auto'
-    let l:command .= ' --reporter unix --extract auto'
 
     if !empty(l:jshint_config)
         let l:command .= ' --config ' . ale#Escape(l:jshint_config)
@@ -32,7 +25,9 @@ endfunction
 
 call ale#linter#Define('javascript', {
 \   'name': 'jshint',
-\   'executable_callback': 'ale_linters#javascript#jshint#GetExecutable',
+\   'executable_callback': ale#node#FindExecutableFunc('javascript_jshint', [
+\       'node_modules/.bin/jshint',
+\   ]),
 \   'command_callback': 'ale_linters#javascript#jshint#GetCommand',
 \   'callback': 'ale#handlers#unix#HandleAsError',
 \})

ale_linters/kotlin/languageserver.vim

@@ -3,15 +3,6 @@
 
 call ale#Set('kotlin_languageserver_executable', 'kotlin-language-server')
 
-function! ale_linters#kotlin#languageserver#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'kotlin_languageserver_executable')
-endfunction
-
-function! ale_linters#kotlin#languageserver#GetCommand(buffer) abort
-    let l:executable = ale_linters#kotlin#languageserver#GetExecutable(a:buffer)
-    return ale#Escape(l:executable)
-endfunction
-
 function! ale_linters#kotlin#languageserver#GetProjectRoot(buffer) abort
     let l:gradle_root = ale#gradle#FindProjectRoot(a:buffer)
 
@@ -31,8 +22,8 @@ endfunction
 call ale#linter#Define('kotlin', {
 \   'name': 'languageserver',
 \   'lsp': 'stdio',
-\   'executable_callback': 'ale_linters#kotlin#languageserver#GetExecutable',
+\   'executable_callback': ale#VarFunc('kotlin_languageserver_executable'),
-\   'command_callback': 'ale_linters#kotlin#languageserver#GetCommand',
+\   'command_callback': '%e',
 \   'language': 'kotlin',
 \   'project_root_callback': 'ale_linters#kotlin#languageserver#GetProjectRoot',
 \})

ale_linters/less/lessc.vim

@@ -5,21 +5,10 @@ call ale#Set('less_lessc_executable', 'lessc')
 call ale#Set('less_lessc_options', '')
 call ale#Set('less_lessc_use_global', get(g:, 'ale_use_global_executables', 0))
 
-function! ale_linters#less#lessc#GetExecutable(buffer) abort
-    return ale#node#FindExecutable(a:buffer, 'less_lessc', [
-    \   'node_modules/.bin/lessc',
-    \])
-endfunction
-
 function! ale_linters#less#lessc#GetCommand(buffer) abort
-    let l:executable = ale_linters#less#lessc#GetExecutable(a:buffer)
+    return '%e --no-color --lint'
-    let l:dir = expand('#' . a:buffer . ':p:h')
+    \   . ' --include-path=' . ale#Escape(expand('#' . a:buffer . ':p:h'))
-    let l:options = ale#Var(a:buffer, 'less_lessc_options')
+    \   . ale#Pad(ale#Var(a:buffer, 'less_lessc_options'))
-
-    return ale#Escape(l:executable)
-    \   . ' --no-color --lint'
-    \   . ' --include-path=' . ale#Escape(l:dir)
-    \   . (!empty(l:options) ? ' ' . l:options : '')
     \   . ' -'
 endfunction
 
@@ -49,7 +38,9 @@ endfunction
 
 call ale#linter#Define('less', {
 \   'name': 'lessc',
-\   'executable_callback': 'ale_linters#less#lessc#GetExecutable',
+\   'executable_callback': ale#node#FindExecutableFunc('less_lessc', [
+\       'node_modules/.bin/lessc',
+\   ]),
 \   'command_callback': 'ale_linters#less#lessc#GetCommand',
 \   'callback': 'ale_linters#less#lessc#Handle',
 \   'output_stream': 'stderr',

ale_linters/less/stylelint.vim

@@ -4,24 +4,17 @@ call ale#Set('less_stylelint_executable', 'stylelint')
 call ale#Set('less_stylelint_options', '')
 call ale#Set('less_stylelint_use_global', get(g:, 'ale_use_global_executables', 0))
 
-function! ale_linters#less#stylelint#GetExecutable(buffer) abort
-    return ale#node#FindExecutable(a:buffer, 'less_stylelint', [
-    \   'node_modules/.bin/stylelint',
-    \])
-endfunction
-
 function! ale_linters#less#stylelint#GetCommand(buffer) abort
-    let l:executable = ale_linters#less#stylelint#GetExecutable(a:buffer)
     let l:options = ale#Var(a:buffer, 'less_stylelint_options')
 
-    return ale#Escape(l:executable)
+    return '%e' . ale#Pad(l:options) . ' --stdin-filename %s'
-    \   . (!empty(l:options) ? ' ' . l:options : '')
-    \   . ' --stdin-filename %s'
 endfunction
 
 call ale#linter#Define('less', {
 \   'name': 'stylelint',
-\   'executable_callback': 'ale_linters#less#stylelint#GetExecutable',
+\   'executable_callback': ale#node#FindExecutableFunc('less_stylelint', [
+\       'node_modules/.bin/stylelint',
+\   ]),
 \   'command_callback': 'ale_linters#less#stylelint#GetCommand',
 \   'callback': 'ale#handlers#css#HandleStyleLintFormat',
 \})

ale_linters/llvm/llc.vim

@@ -3,21 +3,11 @@
 
 call ale#Set('llvm_llc_executable', 'llc')
 
-function! ale_linters#llvm#llc#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'llvm_llc_executable')
-endfunction
-
-function! ale_linters#llvm#llc#GetCommand(buffer) abort
-    return ale#Escape(ale_linters#llvm#llc#GetExecutable(a:buffer))
-    \   . ' -filetype=null -o=' . g:ale#util#nul_file
-endfunction
-
 function! ale_linters#llvm#llc#HandleErrors(buffer, lines) abort
     " Handle '{path}: {file}:{line}:{col}: error: {message}' format
     let l:pattern = '\v^[a-zA-Z]?:?[^:]+: [^:]+:(\d+):(\d+): (.+)$'
-    let l:matches = ale#util#GetMatches(a:lines, l:pattern)
 
-    return map(l:matches, "{
+    return map(ale#util#GetMatches(a:lines, l:pattern), "{
     \   'lnum': str2nr(v:val[1]),
     \   'col': str2nr(v:val[2]),
     \   'text': v:val[3],
@@ -27,8 +17,8 @@ endfunction
 
 call ale#linter#Define('llvm', {
 \   'name': 'llc',
-\   'executable_callback': 'ale_linters#llvm#llc#GetExecutable',
+\   'executable_callback': ale#VarFunc('llvm_llc_executable'),
 \   'output_stream': 'stderr',
-\   'command_callback': 'ale_linters#llvm#llc#GetCommand',
+\   'command_callback': {-> '%e -filetype=null -o=' . g:ale#util#nul_file},
 \   'callback': 'ale_linters#llvm#llc#HandleErrors',
 \})

ale_linters/lua/luac.vim

@@ -3,15 +3,6 @@
 
 call ale#Set('lua_luac_executable', 'luac')
 
-function! ale_linters#lua#luac#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'lua_luac_executable')
-endfunction
-
-function! ale_linters#lua#luac#GetCommand(buffer) abort
-    let l:executable = ale_linters#lua#luac#GetExecutable(a:buffer)
-    return ale#Escape(l:executable) . ' -p - '
-endfunction
-
 function! ale_linters#lua#luac#Handle(buffer, lines) abort
     " Matches patterns line the following:
     "
@@ -33,8 +24,8 @@ endfunction
 
 call ale#linter#Define('lua', {
 \   'name': 'luac',
-\   'executable_callback': 'ale_linters#lua#luac#GetExecutable',
+\   'executable_callback': ale#VarFunc('lua_luac_executable'),
-\   'command_callback': 'ale_linters#lua#luac#GetCommand',
+\   'command': '%e -p -',
 \   'output_stream': 'stderr',
 \   'callback': 'ale_linters#lua#luac#Handle',
 \})

ale_linters/lua/luacheck.vim

@@ -1,19 +1,11 @@
 " Author: Sol Bekic https://github.com/s-ol
 " Description: luacheck linter for lua files
 
-let g:ale_lua_luacheck_executable =
+call ale#Set('lua_luacheck_executable', 'luacheck')
-\   get(g:, 'ale_lua_luacheck_executable', 'luacheck')
+call ale#Set('lua_luacheck_options', '')
-
-let g:ale_lua_luacheck_options =
-\   get(g:, 'ale_lua_luacheck_options', '')
-
-function! ale_linters#lua#luacheck#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'lua_luacheck_executable')
-endfunction
 
 function! ale_linters#lua#luacheck#GetCommand(buffer) abort
-    return ale#Escape(ale_linters#lua#luacheck#GetExecutable(a:buffer))
+    return '%e' . ale#Pad(ale#Var(a:buffer, 'lua_luacheck_options'))
-    \   . ' ' . ale#Var(a:buffer, 'lua_luacheck_options')
     \   . ' --formatter plain --codes --filename %s -'
 endfunction
 
@@ -46,7 +38,7 @@ endfunction
 
 call ale#linter#Define('lua', {
 \   'name': 'luacheck',
-\   'executable_callback': 'ale_linters#lua#luacheck#GetExecutable',
+\   'executable_callback': ale#VarFunc('lua_luacheck_executable'),
 \   'command_callback': 'ale_linters#lua#luacheck#GetCommand',
 \   'callback': 'ale_linters#lua#luacheck#Handle',
 \})

ale_linters/markdown/remark_lint.vim

@@ -5,19 +5,10 @@ call ale#Set('markdown_remark_lint_executable', 'remark')
 call ale#Set('markdown_remark_lint_use_global', get(g:, 'ale_use_global_executables', 0))
 call ale#Set('markdown_remark_lint_options', '')
 
-function! ale_linters#markdown#remark_lint#GetExecutable(buffer) abort
-    return ale#node#FindExecutable(a:buffer, 'markdown_remark_lint', [
-    \   'node_modules/.bin/remark',
-    \])
-endfunction
-
 function! ale_linters#markdown#remark_lint#GetCommand(buffer) abort
-    let l:executable = ale_linters#markdown#remark_lint#GetExecutable(a:buffer)
     let l:options = ale#Var(a:buffer, 'markdown_remark_lint_options')
 
-    return ale#node#Executable(a:buffer, l:executable)
+    return '%e' . ale#Pad(l:options) . ' --no-stdout --no-color'
-    \    . (!empty(l:options) ? ' ' . l:options : '')
-    \    . ' --no-stdout --no-color'
 endfunction
 
 function! ale_linters#markdown#remark_lint#Handle(buffer, lines) abort
@@ -46,7 +37,9 @@ endfunction
 call ale#linter#Define('markdown', {
 \   'name': 'remark_lint',
 \   'aliases': ['remark-lint'],
-\   'executable_callback': 'ale_linters#markdown#remark_lint#GetExecutable',
+\   'executable_callback': ale#node#FindExecutableFunc('markdown_remark_lint', [
+\       'node_modules/.bin/remark',
+\   ]),
 \   'command_callback': 'ale_linters#markdown#remark_lint#GetCommand',
 \   'callback': 'ale_linters#markdown#remark_lint#Handle',
 \   'output_stream': 'stderr',

ale_linters/matlab/mlint.vim

@@ -1,18 +1,7 @@
 " Author: awlayton <alex@layton.in>
 " Description: mlint for MATLAB files
 
-let g:ale_matlab_mlint_executable =
+call ale#Set('matlab_mlint_executable', 'mlint')
-\   get(g:, 'ale_matlab_mlint_executable', 'mlint')
-
-function! ale_linters#matlab#mlint#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'matlab_mlint_executable')
-endfunction
-
-function! ale_linters#matlab#mlint#GetCommand(buffer) abort
-    let l:executable = ale_linters#matlab#mlint#GetExecutable(a:buffer)
-
-    return l:executable . ' -id %t'
-endfunction
 
 function! ale_linters#matlab#mlint#Handle(buffer, lines) abort
     " Matches patterns like the following:
@@ -48,8 +37,8 @@ endfunction
 
 call ale#linter#Define('matlab', {
 \   'name': 'mlint',
-\   'executable_callback': 'ale_linters#matlab#mlint#GetExecutable',
+\   'executable_callback': ale#VarFunc('matlab_mlint_executable'),
-\   'command_callback': 'ale_linters#matlab#mlint#GetCommand',
+\   'command': '%e -id %t',
 \   'output_stream': 'stderr',
 \   'callback': 'ale_linters#matlab#mlint#Handle',
 \})

ale_linters/mercury/mmc.vim

@@ -4,16 +4,11 @@
 call ale#Set('mercury_mmc_executable', 'mmc')
 call ale#Set('mercury_mmc_options', '--make --output-compile-error-lines 100')
 
-function! ale_linters#mercury#mmc#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'mercury_mmc_executable')
-endfunction
-
 function! ale_linters#mercury#mmc#GetCommand(buffer) abort
     let l:module_name = expand('#' . a:buffer . ':t:r')
 
     return ale#path#BufferCdString(a:buffer)
-    \ . ale_linters#mercury#mmc#GetExecutable(a:buffer)
+    \ . '%e --errorcheck-only '
-    \ . ' --errorcheck-only '
     \ . ale#Var(a:buffer, 'mercury_mmc_options')
     \ . ' ' . l:module_name
 endfunction
@@ -38,7 +33,7 @@ endfunction
 call ale#linter#Define('mercury', {
 \   'name': 'mmc',
 \   'output_stream': 'stderr',
-\   'executable_callback': 'ale_linters#mercury#mmc#GetExecutable',
+\   'executable_callback': ale#VarFunc('mercury_mmc_executable'),
 \   'command_callback': 'ale_linters#mercury#mmc#GetCommand',
 \   'callback': 'ale_linters#mercury#mmc#Handle',
 \   'lint_file': 1,

ale_linters/nasm/nasm.vim

@@ -4,25 +4,13 @@
 call ale#Set('nasm_nasm_executable', 'nasm')
 call ale#Set('nasm_nasm_options', '')
 
-function! ale_linters#nasm#nasm#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'nasm_nasm_executable')
-endfunction
-
-function! ale_linters#nasm#nasm#GetOptions(buffer) abort
-    return ale#Var(a:buffer, 'nasm_nasm_options')
-endfunction
-
 function! ale_linters#nasm#nasm#GetCommand(buffer) abort
-    " Note that NASM require a trailing slash to the -I option.
+    " Note that NASM requires a trailing slash for the -I option.
-    let l:executable = ale#Escape(ale_linters#nasm#nasm#GetExecutable(a:buffer))
     let l:separator = has('win32') ? '\' : '/'
-    let l:path = ale#Escape(fnamemodify(bufname(a:buffer), ':p:h') . l:separator)
+    let l:path = fnamemodify(bufname(a:buffer), ':p:h') . l:separator
-    let l:options = ale_linters#nasm#nasm#GetOptions(a:buffer)
 
-    return l:executable
+    return '%e -X gnu -I ' . ale#Escape(l:path)
-    \   . ' -X gnu'
+    \   . ale#Pad(ale#Var(a:buffer, 'nasm_nasm_options'))
-    \   . ' -I ' . l:path
-    \   . ' ' . l:options
     \   . ' %s'
 endfunction
 
@@ -30,6 +18,7 @@ function! ale_linters#nasm#nasm#Handle(buffer, lines) abort
     " Note that we treat 'fatal' as errors.
     let l:pattern = '^.\+:\(\d\+\): \([^:]\+\): \(.\+\)$'
     let l:output = []
+
     for l:match in ale#util#GetMatches(a:lines, l:pattern)
         call add(l:output, {
         \ 'lnum': l:match[1] + 0,
@@ -37,6 +26,7 @@ function! ale_linters#nasm#nasm#Handle(buffer, lines) abort
         \ 'text': l:match[3],
         \})
     endfor
+
     return l:output
 endfunction
 
@@ -44,7 +34,7 @@ call ale#linter#Define('nasm', {
 \   'name': 'nasm',
 \   'output_stream': 'stderr',
 \   'lint_file': 1,
-\   'executable_callback': 'ale_linters#nasm#nasm#GetExecutable',
+\   'executable_callback': ale#VarFunc('nasm_nasm_executable'),
 \   'command_callback': 'ale_linters#nasm#nasm#GetCommand',
 \   'callback': 'ale_linters#nasm#nasm#Handle',
 \})

ale_linters/perl/perl.vim

@@ -1,20 +1,11 @@
 " Author: Vincent Lequertier <https://github.com/SkySymbol>
 " Description: This file adds support for checking perl syntax
 
-let g:ale_perl_perl_executable =
+call ale#Set('perl_perl_executable', 'perl')
-\   get(g:, 'ale_perl_perl_executable', 'perl')
+call ale#Set('perl_perl_options', '-c -Mwarnings -Ilib')
-
-let g:ale_perl_perl_options =
-\   get(g:, 'ale_perl_perl_options', '-c -Mwarnings -Ilib')
-
-function! ale_linters#perl#perl#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'perl_perl_executable')
-endfunction
 
 function! ale_linters#perl#perl#GetCommand(buffer) abort
-    return ale#Escape(ale_linters#perl#perl#GetExecutable(a:buffer))
+    return '%e' . ale#Pad(ale#Var(a:buffer, 'perl_perl_options')) . ' %t'
-    \   . ' ' . ale#Var(a:buffer, 'perl_perl_options')
-    \   . ' %t'
 endfunction
 
 let s:begin_failed_skip_pattern = '\v' . join([
@@ -61,7 +52,7 @@ endfunction
 
 call ale#linter#Define('perl', {
 \   'name': 'perl',
-\   'executable_callback': 'ale_linters#perl#perl#GetExecutable',
+\   'executable_callback': ale#VarFunc('perl_perl_executable'),
 \   'output_stream': 'both',
 \   'command_callback': 'ale_linters#perl#perl#GetCommand',
 \   'callback': 'ale_linters#perl#perl#Handle',

ale_linters/perl/perlcritic.vim

@@ -1,21 +1,10 @@
 " Author: Vincent Lequertier <https://github.com/SkySymbol>, Chris Weyl <cweyl@alumni.drew.edu>
 " Description: This file adds support for checking perl with perl critic
 
-let g:ale_perl_perlcritic_executable =
+call ale#Set('perl_perlcritic_executable', 'perlcritic')
-\   get(g:, 'ale_perl_perlcritic_executable', 'perlcritic')
+call ale#Set('perl_perlcritic_profile', '.perlcriticrc')
-
+call ale#Set('perl_perlcritic_options', '')
-let g:ale_perl_perlcritic_profile =
+call ale#Set('perl_perlcritic_showrules', 0)
-\   get(g:, 'ale_perl_perlcritic_profile', '.perlcriticrc')
-
-let g:ale_perl_perlcritic_options =
-\   get(g:, 'ale_perl_perlcritic_options', '')
-
-let g:ale_perl_perlcritic_showrules =
-\   get(g:, 'ale_perl_perlcritic_showrules', 0)
-
-function! ale_linters#perl#perlcritic#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'perl_perlcritic_executable')
-endfunction
 
 function! ale_linters#perl#perlcritic#GetProfile(buffer) abort
     " first see if we've been overridden
@@ -39,11 +28,11 @@ function! ale_linters#perl#perlcritic#GetCommand(buffer) abort
     let l:profile = ale_linters#perl#perlcritic#GetProfile(a:buffer)
     let l:options = ale#Var(a:buffer, 'perl_perlcritic_options')
 
-    return ale#Escape(ale_linters#perl#perlcritic#GetExecutable(a:buffer))
+    return '%e'
     \   . ' --verbose ' . ale#Escape(l:critic_verbosity)
     \   . ' --nocolor'
     \   . (!empty(l:profile) ? ' --profile ' . ale#Escape(l:profile) : '')
-    \   . (!empty(l:options) ? ' ' . l:options : '')
+    \   . ale#Pad(l:options)
 endfunction
 
 
@@ -66,7 +55,7 @@ endfunction
 call ale#linter#Define('perl', {
 \   'name': 'perlcritic',
 \   'output_stream': 'stdout',
-\   'executable_callback': 'ale_linters#perl#perlcritic#GetExecutable',
+\   'executable_callback': ale#VarFunc('perl_perlcritic_executable'),
 \   'command_callback': 'ale_linters#perl#perlcritic#GetCommand',
 \   'callback': 'ale_linters#perl#perlcritic#Handle',
 \})

ale_linters/php/langserver.vim

@@ -4,16 +4,6 @@
 call ale#Set('php_langserver_executable', 'php-language-server.php')
 call ale#Set('php_langserver_use_global', get(g:, 'ale_use_global_executables', 0))
 
-function! ale_linters#php#langserver#GetExecutable(buffer) abort
-    return ale#node#FindExecutable(a:buffer, 'php_langserver', [
-    \   'vendor/bin/php-language-server.php',
-    \])
-endfunction
-
-function! ale_linters#php#langserver#GetCommand(buffer) abort
-    return 'php ' . ale#Escape(ale_linters#php#langserver#GetExecutable(a:buffer))
-endfunction
-
 function! ale_linters#php#langserver#GetProjectRoot(buffer) abort
     let l:git_path = ale#path#FindNearestDirectory(a:buffer, '.git')
 
@@ -23,7 +13,9 @@ endfunction
 call ale#linter#Define('php', {
 \   'name': 'langserver',
 \   'lsp': 'stdio',
-\   'executable_callback': 'ale_linters#php#langserver#GetExecutable',
+\   'executable_callback': ale#node#FindExecutableFunc('php_langserver', [
-\   'command_callback': 'ale_linters#php#langserver#GetCommand',
+\       'vendor/bin/php-language-server.php',
+\   ]),
+\   'command': 'php %e',
 \   'project_root_callback': 'ale_linters#php#langserver#GetProjectRoot',
 \})

ale_linters/php/phpcs.vim

@@ -6,23 +6,13 @@ let g:ale_php_phpcs_standard = get(g:, 'ale_php_phpcs_standard', '')
 call ale#Set('php_phpcs_executable', 'phpcs')
 call ale#Set('php_phpcs_use_global', get(g:, 'ale_use_global_executables', 0))
 
-function! ale_linters#php#phpcs#GetExecutable(buffer) abort
-    return ale#node#FindExecutable(a:buffer, 'php_phpcs', [
-    \   'vendor/bin/phpcs',
-    \   'phpcs'
-    \])
-endfunction
-
 function! ale_linters#php#phpcs#GetCommand(buffer) abort
-    let l:executable = ale_linters#php#phpcs#GetExecutable(a:buffer)
-
     let l:standard = ale#Var(a:buffer, 'php_phpcs_standard')
     let l:standard_option = !empty(l:standard)
     \   ? '--standard=' . l:standard
     \   : ''
 
-    return ale#Escape(l:executable)
+    return '%e -s --report=emacs --stdin-path=%s' . ale#Pad(l:standard_option)
-    \   . ' -s --report=emacs --stdin-path=%s ' . l:standard_option
 endfunction
 
 function! ale_linters#php#phpcs#Handle(buffer, lines) abort
@@ -50,7 +40,10 @@ endfunction
 
 call ale#linter#Define('php', {
 \   'name': 'phpcs',
-\   'executable_callback': 'ale_linters#php#phpcs#GetExecutable',
+\   'executable_callback': ale#node#FindExecutableFunc('php_phpcs', [
+\       'vendor/bin/phpcs',
+\       'phpcs'
+\   ]),
 \   'command_callback': 'ale_linters#php#phpcs#GetCommand',
 \   'callback': 'ale_linters#php#phpcs#Handle',
 \})

ale_linters/php/phpmd.vim

@@ -6,16 +6,9 @@ let g:ale_php_phpmd_executable = get(g:, 'ale_php_phpmd_executable', 'phpmd')
 " Set to change the ruleset
 let g:ale_php_phpmd_ruleset = get(g:, 'ale_php_phpmd_ruleset', 'cleancode,codesize,controversial,design,naming,unusedcode')
 
-function! ale_linters#php#phpmd#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'php_phpmd_executable')
-endfunction
-
 function! ale_linters#php#phpmd#GetCommand(buffer) abort
-    let l:executable = ale_linters#php#phpmd#GetExecutable(a:buffer)
+    return '%e %s text'
-
+    \   . ale#Pad(ale#Var(a:buffer, 'php_phpmd_ruleset'))
-    return ale#Escape(l:executable)
-    \   . ' %s text '
-    \   . ale#Var(a:buffer, 'php_phpmd_ruleset')
     \   . ' --ignore-violations-on-exit %t'
 endfunction
 
@@ -39,7 +32,7 @@ endfunction
 
 call ale#linter#Define('php', {
 \   'name': 'phpmd',
-\   'executable_callback': 'ale_linters#php#phpmd#GetExecutable',
+\   'executable_callback': ale#VarFunc('php_phpmd_executable'),
 \   'command_callback': 'ale_linters#php#phpmd#GetCommand',
 \   'callback': 'ale_linters#php#phpmd#Handle',
 \})

ale_linters/php/phpstan.vim

@@ -6,20 +6,13 @@ let g:ale_php_phpstan_executable = get(g:, 'ale_php_phpstan_executable', 'phpsta
 let g:ale_php_phpstan_level = get(g:, 'ale_php_phpstan_level', '4')
 let g:ale_php_phpstan_configuration = get(g:, 'ale_php_phpstan_configuration', '')
 
-function! ale_linters#php#phpstan#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'php_phpstan_executable')
-endfunction
-
 function! ale_linters#php#phpstan#GetCommand(buffer) abort
-    let l:executable = ale_linters#php#phpstan#GetExecutable(a:buffer)
-
     let l:configuration = ale#Var(a:buffer, 'php_phpstan_configuration')
     let l:configuration_option = !empty(l:configuration)
     \   ? ' -c ' . l:configuration
     \   : ''
 
-    return ale#Escape(l:executable)
+    return '%e analyze -l'
-    \   . ' analyze -l'
     \   . ale#Var(a:buffer, 'php_phpstan_level')
     \   . ' --errorFormat raw'
     \   . l:configuration_option
@@ -47,7 +40,7 @@ endfunction
 
 call ale#linter#Define('php', {
 \   'name': 'phpstan',
-\   'executable_callback': 'ale_linters#php#phpstan#GetExecutable',
+\   'executable_callback': ale#VarFunc('php_phpstan_executable'),
 \   'command_callback': 'ale_linters#php#phpstan#GetCommand',
 \   'callback': 'ale_linters#php#phpstan#Handle',
 \})

ale_linters/pony/ponyc.vim

@@ -3,19 +3,14 @@
 call ale#Set('pony_ponyc_executable', 'ponyc')
 call ale#Set('pony_ponyc_options', '--pass paint')
 
-function! ale_linters#pony#ponyc#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'pony_ponyc_executable')
-endfunction
-
 function! ale_linters#pony#ponyc#GetCommand(buffer) abort
-    return ale#Escape(ale_linters#pony#ponyc#GetExecutable(a:buffer))
+    return '%e' . ale#Pad(ale#Var(a:buffer, 'pony_ponyc_options'))
-    \   . ' ' . ale#Var(a:buffer, 'pony_ponyc_options')
 endfunction
 
 call ale#linter#Define('pony', {
 \   'name': 'ponyc',
 \   'output_stream': 'stderr',
-\   'executable_callback': 'ale_linters#pony#ponyc#GetExecutable',
+\   'executable_callback': ale#VarFunc('pony_ponyc_executable'),
 \   'command_callback': 'ale_linters#pony#ponyc#GetCommand',
 \   'callback': 'ale#handlers#pony#HandlePonycFormat',
 \})

ale_linters/pug/puglint.vim

@@ -5,12 +5,6 @@ call ale#Set('pug_puglint_options', '')
 call ale#Set('pug_puglint_executable', 'pug-lint')
 call ale#Set('pug_puglint_use_global', get(g:, 'ale_use_global_executables', 0))
 
-function! ale_linters#pug#puglint#GetExecutable(buffer) abort
-    return ale#node#FindExecutable(a:buffer, 'pug_puglint', [
-    \   'node_modules/.bin/pug-lint',
-    \])
-endfunction
-
 function! s:FindConfig(buffer) abort
     for l:filename in [
     \   '.pug-lintrc',
@@ -29,19 +23,19 @@ function! s:FindConfig(buffer) abort
 endfunction
 
 function! ale_linters#pug#puglint#GetCommand(buffer) abort
-    let l:executable = ale_linters#pug#puglint#GetExecutable(a:buffer)
     let l:options = ale#Var(a:buffer, 'pug_puglint_options')
     let l:config = s:FindConfig(a:buffer)
 
-    return ale#Escape(l:executable)
+    return '%e' . ale#Pad(l:options)
-    \   . (!empty(l:options) ? ' ' . l:options : '')
     \   . (!empty(l:config) ? ' -c ' . ale#Escape(l:config) : '')
     \   . ' -r inline %t'
 endfunction
 
 call ale#linter#Define('pug', {
 \   'name': 'puglint',
-\   'executable_callback': 'ale_linters#pug#puglint#GetExecutable',
+\   'executable_callback': ale#node#FindExecutableFunc('pug_puglint', [
+\       'node_modules/.bin/pug-lint',
+\   ]),
 \   'output_stream': 'stderr',
 \   'command_callback': 'ale_linters#pug#puglint#GetCommand',
 \   'callback': 'ale#handlers#unix#HandleAsError',

ale_linters/puppet/languageserver.vim

@@ -3,16 +3,6 @@
 
 call ale#Set('puppet_languageserver_executable', 'puppet-languageserver')
 
-function! ale_linters#puppet#languageserver#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'puppet_languageserver_executable')
-endfunction
-
-function! ale_linters#puppet#languageserver#GetCommand(buffer) abort
-    let l:exe = ale#Escape(ale_linters#puppet#languageserver#GetExecutable(a:buffer))
-
-    return l:exe . ' --stdio'
-endfunction
-
 function! ale_linters#puppet#languageserver#GetProjectRoot(buffer) abort
     " Note: The metadata.json file is recommended for Puppet 4+ modules, but
     " there's no requirement to have it, so fall back to the other possible
@@ -38,8 +28,8 @@ endfunction
 call ale#linter#Define('puppet', {
 \   'name': 'languageserver',
 \   'lsp': 'stdio',
-\   'executable_callback': 'ale_linters#puppet#languageserver#GetExecutable',
+\   'executable_callback': ale#VarFunc('puppet_languageserver_executable'),
-\   'command_callback': 'ale_linters#puppet#languageserver#GetCommand',
+\   'command': '%e --stdio',
 \   'language': 'puppet',
 \   'project_root_callback': 'ale_linters#puppet#languageserver#GetProjectRoot',
 \})

ale_linters/puppet/puppetlint.vim

@@ -1,26 +1,18 @@
 " Author: Alexander Olofsson <alexander.olofsson@liu.se>, Robert Flechtner <flechtner@chemmedia.de>
 " Description: puppet-lint for puppet files
 
-let g:ale_puppet_puppetlint_executable =
+call ale#Set('puppet_puppetlint_executable', 'puppet-lint')
-\   get(g:, 'ale_puppet_puppetlint_executable', 'puppet-lint')
+call ale#Set('puppet_puppetlint_options', '--no-autoloader_layout-check')
-
-let g:ale_puppet_puppetlint_options =
-\   get(g:, 'ale_puppet_puppetlint_options', '--no-autoloader_layout-check')
-
-function! ale_linters#puppet#puppetlint#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'puppet_puppetlint_executable')
-endfunction
 
 function! ale_linters#puppet#puppetlint#GetCommand(buffer) abort
-    return ale_linters#puppet#puppetlint#GetExecutable(a:buffer)
+    return '%e' . ale#Pad(ale#Var(a:buffer, 'puppet_puppetlint_options'))
-    \   . ' ' . ale#Var(a:buffer, 'puppet_puppetlint_options')
     \   . ' --log-format "-:%{line}:%{column}: %{kind}: [%{check}] %{message}"'
     \   . ' %t'
 endfunction
 
 call ale#linter#Define('puppet', {
 \   'name': 'puppetlint',
-\   'executable_callback': 'ale_linters#puppet#puppetlint#GetExecutable',
+\   'executable_callback': ale#VarFunc('puppet_puppetlint_executable'),
 \   'command_callback': 'ale_linters#puppet#puppetlint#GetCommand',
 \   'callback': 'ale#handlers#gcc#HandleGCCFormat',
 \})

ale_linters/pyrex/cython.vim

@@ -5,16 +5,11 @@
 call ale#Set('pyrex_cython_executable', 'cython')
 call ale#Set('pyrex_cython_options', '--warning-extra')
 
-function! ale_linters#pyrex#cython#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'pyrex_cython_executable')
-endfunction
-
 function! ale_linters#pyrex#cython#GetCommand(buffer) abort
     let l:local_dir = ale#Escape(fnamemodify(bufname(a:buffer), ':p:h'))
 
-    return ale#Escape(ale_linters#pyrex#cython#GetExecutable(a:buffer))
+    return '%e --working ' . l:local_dir . ' --include-dir ' . l:local_dir
-    \   . ' --working ' . l:local_dir . ' --include-dir ' . l:local_dir
+    \   . ale#Pad(ale#Var(a:buffer, 'pyrex_cython_options'))
-    \   . ' ' . ale#Var(a:buffer, 'pyrex_cython_options')
     \   . ' --output-file ' . g:ale#util#nul_file . ' %t'
 endfunction
 
@@ -37,7 +32,7 @@ endfunction
 call ale#linter#Define('pyrex', {
 \   'name': 'cython',
 \   'output_stream': 'stderr',
-\   'executable_callback': 'ale_linters#pyrex#cython#GetExecutable',
+\   'executable_callback': ale#VarFunc('pyrex_cython_executable'),
 \   'command_callback': 'ale_linters#pyrex#cython#GetCommand',
 \   'callback': 'ale_linters#pyrex#cython#Handle',
 \})

ale_linters/qml/qmlfmt.vim

@@ -1,40 +1,25 @@
 " Author: pylipp (www.github.com/pylipp)
 " Description: qmlfmt for QML files
 
-let g:ale_qml_qmlfmt_executable = get(g:, 'ale_qml_qmlfmt_executable', 'qmlfmt')
+call ale#Set('qml_qmlfmt_executable', 'qmlfmt')
-
-function! ale_linters#qml#qmlfmt#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'qml_qmlfmt_executable')
-endfunction
-
-function! ale_linters#qml#qmlfmt#GetCommand(buffer) abort
-    return ale#Escape(ale_linters#qml#qmlfmt#GetExecutable(a:buffer))
-    \   . ' -e'
-endfunction
 
 " Find lines like
 " Error:11:1: Expected token `}'
 function! ale_linters#qml#qmlfmt#Handle(buffer, lines) abort
     let l:pattern = '\v^(Error|Warning):(\d+):(\d+): (.+)$'
-    let l:output = []
 
-    for l:match in ale#util#GetMatches(a:lines, l:pattern)
+    return map(ale#util#GetMatches(a:lines, l:pattern), "{
-        let l:item = {
+    \   'lnum': v:val[2] + 0,
-        \   'lnum': l:match[2] + 0,
+    \   'col': v:val[3] + 0,
-        \   'col': l:match[3] + 0,
+    \   'text': v:val[4],
-        \   'text': l:match[4],
+    \   'type': v:val[1] is# 'Warning' ? 'W' : 'E',
-        \   'type': l:match[1] is# 'Warning' ? 'W' : 'E',
+    \}")
-        \}
-        call add(l:output, l:item)
-    endfor
-
-    return l:output
 endfunction
 
 call ale#linter#Define('qml', {
 \   'name': 'qmlfmt',
 \   'output_stream': 'stderr',
-\   'executable_callback': 'ale_linters#qml#qmlfmt#GetExecutable',
+\   'executable_callback': ale#VarFunc('qml_qmlfmt_executable'),
-\   'command_callback': 'ale_linters#qml#qmlfmt#GetCommand',
+\   'command': '%e -e',
 \   'callback': 'ale_linters#qml#qmlfmt#Handle',
 \})

ale_linters/ruby/ruby.vim

@@ -3,20 +3,10 @@
 
 call ale#Set('ruby_ruby_executable', 'ruby')
 
-function! ale_linters#ruby#ruby#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'ruby_ruby_executable')
-endfunction
-
-function! ale_linters#ruby#ruby#GetCommand(buffer) abort
-    let l:executable = ale_linters#ruby#ruby#GetExecutable(a:buffer)
-
-    return ale#Escape(l:executable) . ' -w -c -T1 %t'
-endfunction
-
 call ale#linter#Define('ruby', {
 \   'name': 'ruby',
-\   'executable_callback': 'ale_linters#ruby#ruby#GetExecutable',
+\   'executable_callback': ale#VarFunc('ruby_ruby_executable'),
-\   'command_callback': 'ale_linters#ruby#ruby#GetCommand',
+\   'command': '%e -w -c -T1 %t',
 \   'output_stream': 'stderr',
 \   'callback': 'ale#handlers#ruby#HandleSyntaxErrors',
 \})

ale_linters/rust/rls.vim

@@ -4,19 +4,10 @@
 call ale#Set('rust_rls_executable', 'rls')
 call ale#Set('rust_rls_toolchain', 'nightly')
 
-function! ale_linters#rust#rls#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'rust_rls_executable')
-endfunction
-
 function! ale_linters#rust#rls#GetCommand(buffer) abort
-    let l:executable = ale_linters#rust#rls#GetExecutable(a:buffer)
     let l:toolchain = ale#Var(a:buffer, 'rust_rls_toolchain')
 
-    if empty(l:toolchain)
+    return '%e' . (!empty(l:toolchain) ? ' +' . ale#Escape(l:toolchain) : '')
-      return ale#Escape(l:executable)
-    else
-      return ale#Escape(l:executable) . ' +' . ale#Escape(l:toolchain)
-    endif
 endfunction
 
 function! ale_linters#rust#rls#GetProjectRoot(buffer) abort
@@ -28,7 +19,7 @@ endfunction
 call ale#linter#Define('rust', {
 \   'name': 'rls',
 \   'lsp': 'stdio',
-\   'executable_callback': 'ale_linters#rust#rls#GetExecutable',
+\   'executable_callback': ale#VarFunc('rust_rls_executable'),
 \   'command_callback': 'ale_linters#rust#rls#GetCommand',
 \   'project_root_callback': 'ale_linters#rust#rls#GetProjectRoot',
 \})

ale_linters/sass/stylelint.vim

@@ -3,20 +3,11 @@
 call ale#Set('sass_stylelint_executable', 'stylelint')
 call ale#Set('sass_stylelint_use_global', get(g:, 'ale_use_global_executables', 0))
 
-function! ale_linters#sass#stylelint#GetExecutable(buffer) abort
-    return ale#node#FindExecutable(a:buffer, 'sass_stylelint', [
-    \   'node_modules/.bin/stylelint',
-    \])
-endfunction
-
-function! ale_linters#sass#stylelint#GetCommand(buffer) abort
-    return ale_linters#sass#stylelint#GetExecutable(a:buffer)
-    \   . ' --stdin-filename %s'
-endfunction
-
 call ale#linter#Define('sass', {
 \   'name': 'stylelint',
-\   'executable_callback': 'ale_linters#sass#stylelint#GetExecutable',
+\   'executable_callback': ale#node#FindExecutableFunc('sass_stylelint', [
-\   'command_callback': 'ale_linters#sass#stylelint#GetCommand',
+\       'node_modules/.bin/stylelint',
+\   ]),
+\   'command': '%e --stdin-filename %s',
 \   'callback': 'ale#handlers#css#HandleStyleLintFormat',
 \})

ale_linters/scala/fsc.vim

@@ -1,29 +1,14 @@
 " Author: Nils Leuzinger - https://github.com/PawkyPenguin
 " Description: Basic scala support using fsc
-"
-function! ale_linters#scala#fsc#GetExecutable(buffer) abort
-    if index(split(getbufvar(a:buffer, '&filetype'), '\.'), 'sbt') >= 0
-        " Don't check sbt files
-        return ''
-    endif
 
-    return 'fsc'
+function! s:IsSbt(buffer) abort
-endfunction
+    return index(split(getbufvar(a:buffer, '&filetype'), '\.'), 'sbt') >= 0
-
-function! ale_linters#scala#fsc#GetCommand(buffer) abort
-    let l:executable = ale_linters#scala#fsc#GetExecutable(a:buffer)
-
-    if empty(l:executable)
-        return ''
-    endif
-
-    return ale#Escape(l:executable) . ' -Ystop-after:parser %t'
 endfunction
 
 call ale#linter#Define('scala', {
 \   'name': 'fsc',
-\   'executable_callback': 'ale_linters#scala#fsc#GetExecutable',
+\   'executable_callback': {buf -> s:IsSbt(buf) ? '' : 'fsc'},
-\   'command_callback': 'ale_linters#scala#fsc#GetCommand',
+\   'command': '%e -Ystop-after:parser %t',
 \   'callback': 'ale#handlers#scala#HandleScalacLintFormat',
 \   'output_stream': 'stderr',
 \})

ale_linters/scala/scalac.vim

@@ -2,29 +2,14 @@
 "         w0rp <devw0rp@gmail.com>
 " Description: Basic scala support using scalac
 
-function! ale_linters#scala#scalac#GetExecutable(buffer) abort
+function! s:IsSbt(buffer) abort
-    if index(split(getbufvar(a:buffer, '&filetype'), '\.'), 'sbt') >= 0
+    return index(split(getbufvar(a:buffer, '&filetype'), '\.'), 'sbt') >= 0
-        " Don't check sbt files
-        return ''
-    endif
-
-    return 'scalac'
-endfunction
-
-function! ale_linters#scala#scalac#GetCommand(buffer) abort
-    let l:executable = ale_linters#scala#scalac#GetExecutable(a:buffer)
-
-    if empty(l:executable)
-        return ''
-    endif
-
-    return ale#Escape(l:executable) . ' -Ystop-after:parser %t'
 endfunction
 
 call ale#linter#Define('scala', {
 \   'name': 'scalac',
-\   'executable_callback': 'ale_linters#scala#scalac#GetExecutable',
+\   'executable_callback': {buf -> s:IsSbt(buf) ? '' : 'scalac'},
-\   'command_callback': 'ale_linters#scala#scalac#GetCommand',
+\   'command': '%e -Ystop-after:parser %t',
 \   'callback': 'ale#handlers#scala#HandleScalacLintFormat',
 \   'output_stream': 'stderr',
 \})

ale_linters/scss/stylelint.vim

@@ -3,20 +3,11 @@
 call ale#Set('scss_stylelint_executable', 'stylelint')
 call ale#Set('scss_stylelint_use_global', get(g:, 'ale_use_global_executables', 0))
 
-function! ale_linters#scss#stylelint#GetExecutable(buffer) abort
-    return ale#node#FindExecutable(a:buffer, 'scss_stylelint', [
-    \   'node_modules/.bin/stylelint',
-    \])
-endfunction
-
-function! ale_linters#scss#stylelint#GetCommand(buffer) abort
-    return ale_linters#scss#stylelint#GetExecutable(a:buffer)
-    \   . ' --stdin-filename %s'
-endfunction
-
 call ale#linter#Define('scss', {
 \   'name': 'stylelint',
-\   'executable_callback': 'ale_linters#scss#stylelint#GetExecutable',
+\   'executable_callback': ale#node#FindExecutableFunc('scss_stylelint', [
-\   'command_callback': 'ale_linters#scss#stylelint#GetCommand',
+\       'node_modules/.bin/stylelint',
+\   ]),
+\   'command': '%e --stdin-filename %s',
 \   'callback': 'ale#handlers#css#HandleStyleLintFormat',
 \})

ale_linters/sh/shellcheck.vim

@@ -6,14 +6,9 @@
 " codes to exclude from shellcheck. For example:
 "
 " let g:ale_sh_shellcheck_exclusions = 'SC2002,SC2004'
-let g:ale_sh_shellcheck_exclusions =
+call ale#Set('sh_shellcheck_exclusions', get(g:, 'ale_linters_sh_shellcheck_exclusions', ''))
-\   get(g:, 'ale_sh_shellcheck_exclusions', get(g:, 'ale_linters_sh_shellcheck_exclusions', ''))
+call ale#Set('sh_shellcheck_executable', 'shellcheck')
-
+call ale#Set('sh_shellcheck_options', '')
-let g:ale_sh_shellcheck_executable =
-\   get(g:, 'ale_sh_shellcheck_executable', 'shellcheck')
-
-let g:ale_sh_shellcheck_options =
-\   get(g:, 'ale_sh_shellcheck_options', '')
 
 function! ale_linters#sh#shellcheck#GetExecutable(buffer) abort
     return ale#Var(a:buffer, 'sh_shellcheck_executable')

ale_linters/spec/rpmlint.vim

@@ -26,19 +26,12 @@
 " And this is always output at the end and should just be ignored:
 "   0 packages and 1 specfiles checked; 4 errors, 0 warnings.
 
-let g:ale_spec_rpmlint_executable =
+call ale#Set('spec_rpmlint_executable', 'rpmlint')
-\   get(g:, 'ale_spec_rpmlint_executable', 'rpmlint')
+call ale#Set('spec_rpmlint_options', '')
-
-let g:ale_spec_rpmlint_options =
-\   get(g:, 'ale_spec_rpmlint_options', '')
-
-function! ale_linters#spec#rpmlint#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'spec_rpmlint_executable')
-endfunction
 
 function! ale_linters#spec#rpmlint#GetCommand(buffer) abort
-    return ale_linters#spec#rpmlint#GetExecutable(a:buffer)
+    return '%e'
-    \   . ' ' . ale#Var(a:buffer, 'spec_rpmlint_options')
+    \   . ale#Pad(ale#Var(a:buffer, 'spec_rpmlint_options'))
     \   . ' -o "NetworkEnabled False"'
     \   . ' -v'
     \   . ' %t'
@@ -79,7 +72,7 @@ endfunction
 
 call ale#linter#Define('spec', {
 \   'name': 'rpmlint',
-\   'executable_callback': 'ale_linters#spec#rpmlint#GetExecutable',
+\   'executable_callback': ale#VarFunc('spec_rpmlint_executable'),
 \   'command_callback': 'ale_linters#spec#rpmlint#GetCommand',
 \   'callback': 'ale_linters#spec#rpmlint#Handle',
 \})

ale_linters/stylus/stylelint.vim

@@ -4,21 +4,17 @@ call ale#Set('stylus_stylelint_executable', 'stylelint')
 call ale#Set('stylus_stylelint_options', '')
 call ale#Set('stylus_stylelint_use_global', get(g:, 'ale_use_global_executables', 0))
 
-function! ale_linters#stylus#stylelint#GetExecutable(buffer) abort
-    return ale#node#FindExecutable(a:buffer, 'stylus_stylelint', [
-    \   'node_modules/.bin/stylelint',
-    \])
-endfunction
-
 function! ale_linters#stylus#stylelint#GetCommand(buffer) abort
-    return ale_linters#stylus#stylelint#GetExecutable(a:buffer)
+    return '%e'
-    \   . ' ' . ale#Var(a:buffer, 'stylus_stylelint_options')
+    \   . ale#Pad(ale#Var(a:buffer, 'stylus_stylelint_options'))
     \   . ' --stdin-filename %s'
 endfunction
 
 call ale#linter#Define('stylus', {
 \   'name': 'stylelint',
-\   'executable_callback': 'ale_linters#stylus#stylelint#GetExecutable',
+\   'executable_callback': ale#node#FindExecutableFunc('stylus_stylelint', [
+\       'node_modules/.bin/stylelint',
+\   ]),
 \   'command_callback': 'ale_linters#stylus#stylelint#GetCommand',
 \   'callback': 'ale#handlers#css#HandleStyleLintFormat',
 \})

ale_linters/tcl/nagelfar.vim

@@ -4,16 +4,10 @@
 call ale#Set('tcl_nagelfar_executable', 'nagelfar.tcl')
 call ale#Set('tcl_nagelfar_options', '')
 
-function! ale_linters#tcl#nagelfar#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'tcl_nagelfar_executable')
-endfunction
-
 function! ale_linters#tcl#nagelfar#GetCommand(buffer) abort
     let l:options = ale#Var(a:buffer, 'tcl_nagelfar_options')
 
-    return ale#Escape(ale_linters#tcl#nagelfar#GetExecutable(a:buffer))
+    return '%e' . ale#Pad(l:options) . ' %s'
-    \   . (!empty(l:options) ? ' ' . l:options : '')
-    \   . ' %s'
 endfunction
 
 function! ale_linters#tcl#nagelfar#Handle(buffer, lines) abort
@@ -39,7 +33,7 @@ endfunction
 call ale#linter#Define('tcl', {
 \   'name': 'nagelfar',
 \   'output_stream': 'stdout',
-\   'executable_callback': 'ale_linters#tcl#nagelfar#GetExecutable',
+\   'executable_callback': ale#VarFunc('tcl_nagelfar_executable'),
 \   'command_callback': 'ale_linters#tcl#nagelfar#GetCommand',
 \   'callback': 'ale_linters#tcl#nagelfar#Handle',
 \   'lint_file': 1,

ale_linters/terraform/tflint.vim

@@ -30,14 +30,11 @@ function! ale_linters#terraform#tflint#Handle(buffer, lines) abort
     return l:output
 endfunction
 
-function! ale_linters#terraform#tflint#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'terraform_tflint_executable')
-endfunction
-
 function! ale_linters#terraform#tflint#GetCommand(buffer) abort
-    let l:cmd = ale#Escape(ale#Var(a:buffer, 'terraform_tflint_executable'))
+    let l:cmd = '%e'
 
     let l:config_file = ale#path#FindNearestFile(a:buffer, '.tflint.hcl')
+
     if !empty(l:config_file)
         let l:cmd .= ' --config ' . ale#Escape(l:config_file)
     endif
@@ -54,9 +51,7 @@ endfunction
 
 call ale#linter#Define('terraform', {
 \   'name': 'tflint',
-\   'executable_callback': 'ale_linters#terraform#tflint#GetExecutable',
+\   'executable_callback': ale#VarFunc('terraform_tflint_executable'),
 \   'command_callback': 'ale_linters#terraform#tflint#GetCommand',
 \   'callback': 'ale_linters#terraform#tflint#Handle',
 \})
-
-" vim:sw=4

ale_linters/tex/lacheck.vim

@@ -1,16 +1,7 @@
 " Author: Andrew Balmos - <andrew@balmos.org>
 " Description: lacheck for LaTeX files
 
-let g:ale_tex_lacheck_executable =
+call ale#Set('tex_lacheck_executable', 'lacheck')
-\   get(g:, 'ale_tex_lacheck_executable', 'lacheck')
-
-function! ale_linters#tex#lacheck#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'tex_lacheck_executable')
-endfunction
-
-function! ale_linters#tex#lacheck#GetCommand(buffer) abort
-    return ale#Var(a:buffer, 'tex_lacheck_executable') . ' %t'
-endfunction
 
 function! ale_linters#tex#lacheck#Handle(buffer, lines) abort
     " Mattes lines like:
@@ -41,7 +32,7 @@ endfunction
 
 call ale#linter#Define('tex', {
 \   'name': 'lacheck',
-\   'executable_callback': 'ale_linters#tex#lacheck#GetExecutable',
+\   'executable_callback': ale#VarFunc('tex_lacheck_executable'),
-\   'command_callback': 'ale_linters#tex#lacheck#GetCommand',
+\   'command': '%e %t',
 \   'callback': 'ale_linters#tex#lacheck#Handle'
 \})

ale_linters/thrift/thrift.vim

@@ -5,10 +5,6 @@ call ale#Set('thrift_thrift_generators', ['cpp'])
 call ale#Set('thrift_thrift_includes', [])
 call ale#Set('thrift_thrift_options', '-strict')
 
-function! ale_linters#thrift#thrift#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'thrift_thrift_executable')
-endfunction
-
 function! ale_linters#thrift#thrift#GetCommand(buffer) abort
     let l:generators = ale#Var(a:buffer, 'thrift_thrift_generators')
     let l:includes = ale#Var(a:buffer, 'thrift_thrift_includes')
@@ -22,7 +18,7 @@ function! ale_linters#thrift#thrift#GetCommand(buffer) abort
 
     let l:output_dir = ale#engine#CreateDirectory(a:buffer)
 
-    return ale#Escape(ale_linters#thrift#thrift#GetExecutable(a:buffer))
+    return '%e'
     \   . ale#Pad(join(map(copy(l:generators), "'--gen ' . v:val")))
     \   . ale#Pad(join(map(copy(l:includes), "'-I ' . v:val")))
     \   . ale#Pad(ale#Var(a:buffer, 'thrift_thrift_options'))
@@ -83,7 +79,7 @@ call ale#linter#Define('thrift', {
 \   'name': 'thrift',
 \   'executable': 'thrift',
 \   'output_stream': 'both',
-\   'executable_callback': 'ale_linters#thrift#thrift#GetExecutable',
+\   'executable_callback': ale#VarFunc('thrift_thrift_executable'),
 \   'command_callback': 'ale_linters#thrift#thrift#GetCommand',
 \   'callback': 'ale_linters#thrift#thrift#Handle',
 \})

ale_linters/typescript/tsserver.vim

@@ -5,22 +5,13 @@ call ale#Set('typescript_tsserver_executable', 'tsserver')
 call ale#Set('typescript_tsserver_config_path', '')
 call ale#Set('typescript_tsserver_use_global', get(g:, 'ale_use_global_executables', 0))
 
-" These functions need to be defined just to comply with the API for LSP.
-function! ale_linters#typescript#tsserver#GetProjectRoot(buffer) abort
-    return ''
-endfunction
-
-function! ale_linters#typescript#tsserver#GetExecutable(buffer) abort
-    return ale#node#FindExecutable(a:buffer, 'typescript_tsserver', [
-    \   'node_modules/.bin/tsserver',
-    \])
-endfunction
-
 call ale#linter#Define('typescript', {
 \   'name': 'tsserver',
 \   'lsp': 'tsserver',
-\   'executable_callback': 'ale_linters#typescript#tsserver#GetExecutable',
+\   'executable_callback': ale#node#FindExecutableFunc('typescript_tsserver', [
+\       'node_modules/.bin/tsserver',
+\   ]),
 \   'command_callback': 'ale_linters#typescript#tsserver#GetExecutable',
-\   'project_root_callback': 'ale_linters#typescript#tsserver#GetProjectRoot',
+\   'project_root_callback': {-> ''},
 \   'language': '',
 \})

ale_linters/vue/vls.vim

@@ -4,18 +4,6 @@
 call ale#Set('vue_vls_executable', 'vls')
 call ale#Set('vue_vls_use_global', get(g:, 'ale_use_global_executables', 0))
 
-function! ale_linters#vue#vls#GetExecutable(buffer) abort
-    return ale#node#FindExecutable(a:buffer, 'vue_vls', [
-    \   'node_modules/.bin/vls',
-    \])
-endfunction
-
-function! ale_linters#vue#vls#GetCommand(buffer) abort
-    let l:exe = ale#Escape(ale_linters#vue#vls#GetExecutable(a:buffer))
-
-    return l:exe . ' --stdio'
-endfunction
-
 function! ale_linters#vue#vls#GetProjectRoot(buffer) abort
     let l:package_path = ale#path#FindNearestFile(a:buffer, 'package.json')
 
@@ -25,8 +13,10 @@ endfunction
 call ale#linter#Define('vue', {
 \   'name': 'vls',
 \   'lsp': 'stdio',
-\   'executable_callback': 'ale_linters#vue#vls#GetExecutable',
+\   'executable_callback': ale#node#FindExecutableFunc('vue_vls', [
-\   'command_callback': 'ale_linters#vue#vls#GetCommand',
+\       'node_modules/.bin/vls',
+\   ]),
+\   'command': '%e --stdio',
 \   'language': 'vue',
 \   'project_root_callback': 'ale_linters#vue#vls#GetProjectRoot',
 \})

ale_linters/xml/xmllint.vim

@@ -5,12 +5,8 @@
 let g:ale_xml_xmllint_executable = get(g:, 'ale_xml_xmllint_executable', 'xmllint')
 let g:ale_xml_xmllint_options = get(g:, 'ale_xml_xmllint_options', '')
 
-function! ale_linters#xml#xmllint#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'xml_xmllint_executable')
-endfunction
-
 function! ale_linters#xml#xmllint#GetCommand(buffer) abort
-    return ale#Escape(ale_linters#xml#xmllint#GetExecutable(a:buffer))
+    return '%e'
     \   . ale#Pad(ale#Var(a:buffer, 'xml_xmllint_options'))
     \   . ' --noout -'
 endfunction
@@ -63,7 +59,7 @@ endfunction
 call ale#linter#Define('xml', {
 \   'name': 'xmllint',
 \   'output_stream': 'stderr',
-\   'executable_callback': 'ale_linters#xml#xmllint#GetExecutable',
+\   'executable_callback': ale#VarFunc('xml_xmllint_executable'),
 \   'command_callback': 'ale_linters#xml#xmllint#GetCommand',
 \   'callback': 'ale_linters#xml#xmllint#Handle',
 \ })

ale_linters/yaml/swaglint.vim

@@ -4,17 +4,6 @@
 call ale#Set('yaml_swaglint_executable', 'swaglint')
 call ale#Set('yaml_swaglint_use_global', get(g:, 'ale_use_global_executables', 0))
 
-function! ale_linters#yaml#swaglint#GetExecutable(buffer) abort
-    return ale#node#FindExecutable(a:buffer, 'yaml_swaglint', [
-    \   'node_modules/.bin/swaglint',
-    \])
-endfunction
-
-function! ale_linters#yaml#swaglint#GetCommand(buffer) abort
-    return ale_linters#yaml#swaglint#GetExecutable(a:buffer)
-    \    . ' -r compact --stdin'
-endfunction
-
 function! ale_linters#yaml#swaglint#Handle(buffer, lines) abort
     let l:pattern = ': \([^\s]\+\) @ \(\d\+\):\(\d\+\) - \(.\+\)$'
     let l:output = []
@@ -43,7 +32,9 @@ endfunction
 
 call ale#linter#Define('yaml', {
 \   'name': 'swaglint',
-\   'executable_callback': 'ale_linters#yaml#swaglint#GetExecutable',
+\   'executable_callback': ale#node#FindExecutableFunc('yaml_swaglint', [
-\   'command_callback': 'ale_linters#yaml#swaglint#GetCommand',
+\       'node_modules/.bin/swaglint',
+\   ]),
+\   'command': '%e -r compact --stdin',
 \   'callback': 'ale_linters#yaml#swaglint#Handle',
 \})

ale_linters/yaml/yamllint.vim

@@ -1,18 +1,10 @@
 " Author: KabbAmine <amine.kabb@gmail.com>
 
-let g:ale_yaml_yamllint_executable =
+call ale#Set('yaml_yamllint_executable', 'yamllint')
-\   get(g:, 'ale_yaml_yamllint_executable', 'yamllint')
+call ale#Set('yaml_yamllint_options', '')
-
-let g:ale_yaml_yamllint_options =
-\   get(g:, 'ale_yaml_yamllint_options', '')
-
-function! ale_linters#yaml#yamllint#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'yaml_yamllint_executable')
-endfunction
 
 function! ale_linters#yaml#yamllint#GetCommand(buffer) abort
-    return ale_linters#yaml#yamllint#GetExecutable(a:buffer)
+    return '%e' . ale#Pad(ale#Var(a:buffer, 'yaml_yamllint_options'))
-    \   . ' ' . ale#Var(a:buffer, 'yaml_yamllint_options')
     \   . ' -f parsable %t'
 endfunction
 
@@ -52,7 +44,7 @@ endfunction
 
 call ale#linter#Define('yaml', {
 \   'name': 'yamllint',
-\   'executable_callback': 'ale_linters#yaml#yamllint#GetExecutable',
+\   'executable_callback': ale#VarFunc('yaml_yamllint_executable'),
 \   'command_callback': 'ale_linters#yaml#yamllint#GetCommand',
 \   'callback': 'ale_linters#yaml#yamllint#Handle',
 \})

autoload/ale.vim

@@ -197,6 +197,11 @@ function! ale#Var(buffer, variable_name) abort
     return get(l:vars, l:full_name, g:[l:full_name])
 endfunction
 
+" As above, but curry the arguments so only the buffer number is required.
+function! ale#VarFunc(variable_name) abort
+    return {buf -> ale#Var(buf, a:variable_name)}
+endfunction
+
 " Initialize a variable with a default value, if it isn't already set.
 "
 " Every variable name will be prefixed with 'ale_'.

autoload/ale/assert.vim

@@ -54,9 +54,14 @@ function! ale#assert#Linter(expected_executable, expected_command) abort
         endif
     else
         let l:command = ale#linter#GetCommand(l:buffer, l:linter)
+    endif
+
+    if type(l:command) is v:t_string
         " Replace %e with the escaped executable, so tests keep passing after
         " linters are changed to use %e.
         let l:command = substitute(l:command, '%e', '\=ale#Escape(l:executable)', 'g')
+    else
+        call map(l:command, 'substitute(v:val, ''%e'', ''\=ale#Escape(l:executable)'', ''g'')')
     endif
 
     AssertEqual
@@ -126,7 +131,9 @@ function! ale#assert#SetUpLinterTest(filetype, name) abort
 
     execute 'runtime ale_linters/' . a:filetype . '/' . a:name . '.vim'
 
+    if !exists('g:dir')
         call ale#test#SetDirectory('/testplugin/test/command_callback')
+    endif
 
     command! -nargs=+ WithChainResults :call ale#assert#WithChainResults(<args>)
     command! -nargs=+ AssertLinter :call ale#assert#Linter(<args>)
@@ -140,14 +147,33 @@ function! ale#assert#TearDownLinterTest() abort
     unlet! g:ale_create_dummy_temporary_file
     let s:chain_results = []
 
+    if exists(':WithChainResults')
         delcommand WithChainResults
-    delcommand AssertLinter
+    endif
-    delcommand AssertLinterNotExecuted
-    delcommand AssertLSPOptions
-    delcommand AssertLSPLanguage
-    delcommand AssertLSPProject
 
+    if exists(':AssertLinter')
+        delcommand AssertLinter
+    endif
+
+    if exists(':AssertLinterNotExecuted')
+        delcommand AssertLinterNotExecuted
+    endif
+
+    if exists(':AssertLSPOptions')
+        delcommand AssertLSPOptions
+    endif
+
+    if exists(':AssertLSPLanguage')
+        delcommand AssertLSPLanguage
+    endif
+
+    if exists(':AssertLSPProject')
+        delcommand AssertLSPProject
+    endif
+
+    if exists('g:dir')
         call ale#test#RestoreDirectory()
+    endif
 
     Restore
 

autoload/ale/c.vim

@@ -256,7 +256,7 @@ function! ale#c#IncludeOptions(include_paths) abort
         return ''
     endif
 
-    return ' ' . join(l:option_list) . ' '
+    return join(l:option_list)
 endfunction
 
 let g:ale_c_build_dir_names = get(g:, 'ale_c_build_dir_names', [

autoload/ale/node.vim

@@ -23,6 +23,11 @@ function! ale#node#FindExecutable(buffer, base_var_name, path_list) abort
     return ale#Var(a:buffer, a:base_var_name . '_executable')
 endfunction
 
+" As above, but curry the arguments so only the buffer number is required.
+function! ale#node#FindExecutableFunc(base_var_name, path_list) abort
+    return {buf -> ale#node#FindExecutable(buf, a:base_var_name, a:path_list)}
+endfunction
+
 " Create a executable string which executes a Node.js script command with a
 " Node.js executable if needed.
 "

test/command_callback/test_c_import_paths.vader

@@ -0,0 +1,223 @@
+Before:
+  " Make sure the c.vim file is loaded first.
+  call ale#c#FindProjectRoot(bufnr(''))
+
+  Save g:ale_c_parse_makefile
+  Save g:__ale_c_project_filenames
+
+  let g:original_project_filenames = g:__ale_c_project_filenames
+
+  " Remove the .git/HEAD dir for C import paths for these tests.
+  " The tests run inside of a git repo.
+  let g:__ale_c_project_filenames = filter(
+  \ copy(g:__ale_c_project_filenames),
+  \ 'v:val isnot# ''.git/HEAD'''
+  \)
+
+  let g:ale_c_parse_makefile = 0
+
+After:
+  unlet! g:original_project_filenames
+
+  call ale#assert#TearDownLinterTest()
+
+Execute(The C GCC handler should include 'include' directories for projects with a Makefile):
+  call ale#assert#SetUpLinterTest('c', 'gcc')
+  call ale#test#SetFilename('../test_c_projects/makefile_project/subdir/file.c')
+  let g:ale_c_gcc_options = ''
+
+  AssertLinter 'gcc',
+  \ ale#Escape('gcc')
+  \   . ' -S -x c -fsyntax-only'
+  \   . ' -iquote ' . ale#Escape(ale#path#Simplify(g:dir .  '/../test_c_projects/makefile_project/subdir'))
+  \   . ' -I' . ale#Escape(ale#path#Simplify(g:dir .  '/../test_c_projects/makefile_project/include'))
+  \   . ' -'
+
+Execute(The C GCC handler should include 'include' directories for projects with a configure file):
+  call ale#assert#SetUpLinterTest('c', 'gcc')
+  call ale#test#SetFilename('../test_c_projects/configure_project/subdir/file.c')
+  let g:ale_c_gcc_options = ''
+
+  AssertLinter 'gcc',
+  \ ale#Escape('gcc')
+  \   . ' -S -x c -fsyntax-only '
+  \   . '-iquote ' . ale#Escape(ale#path#Simplify(g:dir .  '/../test_c_projects/configure_project/subdir'))
+  \   . ' -I' . ale#Escape(ale#path#Simplify(g:dir .  '/../test_c_projects/configure_project/include'))
+  \   . ' -'
+
+Execute(The C GCC handler should include root directories for projects with .h files in them):
+  call ale#assert#SetUpLinterTest('c', 'gcc')
+  call ale#test#SetFilename('../test_c_projects/h_file_project/subdir/file.c')
+  let g:ale_c_gcc_options = ''
+
+  AssertLinter 'gcc',
+  \ ale#Escape('gcc')
+  \   . ' -S -x c -fsyntax-only '
+  \   . '-iquote ' . ale#Escape(ale#path#Simplify(g:dir .  '/../test_c_projects/h_file_project/subdir'))
+  \   . ' -I' . ale#Escape(ale#path#Simplify(g:dir .  '/../test_c_projects/h_file_project'))
+  \   . ' -'
+
+Execute(The C GCC handler should include root directories for projects with .hpp files in them):
+  call ale#assert#SetUpLinterTest('c', 'gcc')
+  call ale#test#SetFilename('../test_c_projects/hpp_file_project/subdir/file.c')
+  let g:ale_c_gcc_options = ''
+
+  AssertLinter 'gcc',
+  \ ale#Escape('gcc')
+  \   . ' -S -x c -fsyntax-only '
+  \   . '-iquote ' . ale#Escape(ale#path#Simplify(g:dir .  '/../test_c_projects/hpp_file_project/subdir'))
+  \   . ' -I' . ale#Escape(ale#path#Simplify(g:dir .  '/../test_c_projects/hpp_file_project'))
+  \   . ' -'
+
+Execute(The C Clang handler should include 'include' directories for projects with a Makefile):
+  call ale#assert#SetUpLinterTest('c', 'clang')
+  call ale#test#SetFilename('../test_c_projects/makefile_project/subdir/file.c')
+  let g:ale_c_clang_options = ''
+
+  AssertLinter 'clang',
+  \   ale#Escape('clang')
+  \   . ' -S -x c -fsyntax-only '
+  \   . '-iquote ' . ale#Escape(ale#path#Simplify(g:dir .  '/../test_c_projects/makefile_project/subdir'))
+  \   . ' -I' . ale#Escape(ale#path#Simplify(g:dir .  '/../test_c_projects/makefile_project/include'))
+  \   . ' -'
+
+Execute(The C Clang handler should include 'include' directories for projects with a configure file):
+  call ale#assert#SetUpLinterTest('c', 'clang')
+  call ale#test#SetFilename('../test_c_projects/h_file_project/subdir/file.c')
+  let g:ale_c_clang_options = ''
+
+  AssertLinter 'clang',
+  \   ale#Escape('clang')
+  \   . ' -S -x c -fsyntax-only '
+  \   . '-iquote ' . ale#Escape(ale#path#Simplify(g:dir .  '/../test_c_projects/h_file_project/subdir'))
+  \   . ' -I' . ale#Escape(ale#path#Simplify(g:dir .  '/../test_c_projects/h_file_project'))
+  \   . ' -'
+
+Execute(The C Clang handler should include root directories for projects with .h files in them):
+  call ale#assert#SetUpLinterTest('c', 'clang')
+  call ale#test#SetFilename('../test_c_projects/h_file_project/subdir/file.c')
+  let g:ale_c_clang_options = ''
+
+  AssertLinter 'clang',
+  \   ale#Escape('clang')
+  \   . ' -S -x c -fsyntax-only '
+  \   . '-iquote ' . ale#Escape(ale#path#Simplify(g:dir .  '/../test_c_projects/h_file_project/subdir'))
+  \   . ' -I' . ale#Escape(ale#path#Simplify(g:dir .  '/../test_c_projects/h_file_project'))
+  \   . ' -'
+
+Execute(The C Clang handler should include root directories for projects with .hpp files in them):
+  call ale#assert#SetUpLinterTest('c', 'clang')
+  call ale#test#SetFilename('../test_c_projects/hpp_file_project/subdir/file.c')
+  let g:ale_c_clang_options = ''
+
+  AssertLinter 'clang',
+  \   ale#Escape('clang')
+  \   . ' -S -x c -fsyntax-only '
+  \   . '-iquote ' . ale#Escape(ale#path#Simplify(g:dir .  '/../test_c_projects/hpp_file_project/subdir'))
+  \   . ' -I' . ale#Escape(ale#path#Simplify(g:dir .  '/../test_c_projects/hpp_file_project'))
+  \   . ' -'
+
+Execute(The C++ GCC handler should include 'include' directories for projects with a Makefile):
+  call ale#assert#SetUpLinterTest('cpp', 'gcc')
+  call ale#test#SetFilename('../test_c_projects/makefile_project/subdir/file.cpp')
+  let g:ale_cpp_gcc_options = ''
+
+  AssertLinter 'gcc',
+  \   ale#Escape('gcc')
+  \   . ' -S -x c++ -fsyntax-only '
+  \   . '-iquote ' . ale#Escape(ale#path#Simplify(g:dir .  '/../test_c_projects/makefile_project/subdir'))
+  \   . ' -I' . ale#Escape(ale#path#Simplify(g:dir .  '/../test_c_projects/makefile_project/include'))
+  \   . ' -'
+
+Execute(The C++ GCC handler should include 'include' directories for projects with a configure file):
+  call ale#assert#SetUpLinterTest('cpp', 'gcc')
+  call ale#test#SetFilename('../test_c_projects/configure_project/subdir/file.cpp')
+  let g:ale_cpp_gcc_options = ''
+
+  AssertLinter 'gcc',
+  \   ale#Escape('gcc')
+  \   . ' -S -x c++ -fsyntax-only '
+  \   . '-iquote ' . ale#Escape(ale#path#Simplify(g:dir .  '/../test_c_projects/configure_project/subdir'))
+  \   . ' -I' . ale#Escape(ale#path#Simplify(g:dir .  '/../test_c_projects/configure_project/include'))
+  \   . ' -'
+
+Execute(The C++ GCC handler should include root directories for projects with .h files in them):
+  call ale#assert#SetUpLinterTest('cpp', 'gcc')
+  call ale#test#SetFilename('../test_c_projects/h_file_project/subdir/file.cpp')
+  let g:ale_cpp_gcc_options = ''
+
+  AssertLinter 'gcc',
+  \   ale#Escape('gcc')
+  \   . ' -S -x c++ -fsyntax-only '
+  \   . '-iquote ' . ale#Escape(ale#path#Simplify(g:dir .  '/../test_c_projects/h_file_project/subdir'))
+  \   . ' -I' . ale#Escape(ale#path#Simplify(g:dir .  '/../test_c_projects/h_file_project'))
+  \   . ' -'
+
+Execute(The C++ GCC handler should include root directories for projects with .hpp files in them):
+  call ale#assert#SetUpLinterTest('cpp', 'gcc')
+  call ale#test#SetFilename('../test_c_projects/hpp_file_project/subdir/file.cpp')
+  let g:ale_cpp_gcc_options = ''
+
+  AssertLinter 'gcc',
+  \   ale#Escape('gcc')
+  \   . ' -S -x c++ -fsyntax-only '
+  \   . '-iquote ' . ale#Escape(ale#path#Simplify(g:dir .  '/../test_c_projects/hpp_file_project/subdir'))
+  \   . ' -I' . ale#Escape(ale#path#Simplify(g:dir .  '/../test_c_projects/hpp_file_project'))
+  \   . ' -'
+
+Execute(The C++ Clang handler should include 'include' directories for projects with a Makefile):
+  call ale#assert#SetUpLinterTest('cpp', 'clang')
+  call ale#test#SetFilename('../test_c_projects/makefile_project/subdir/file.cpp')
+  let g:ale_cpp_clang_options = ''
+
+  AssertLinter 'clang++',
+  \   ale#Escape('clang++')
+  \   . ' -S -x c++ -fsyntax-only '
+  \   . '-iquote ' . ale#Escape(ale#path#Simplify(g:dir .  '/../test_c_projects/makefile_project/subdir'))
+  \   . ' -I' . ale#Escape(ale#path#Simplify(g:dir .  '/../test_c_projects/makefile_project/include'))
+  \   . ' -'
+
+Execute(The C++ Clang handler should include 'include' directories for projects with a configure file):
+  call ale#assert#SetUpLinterTest('cpp', 'clang')
+  call ale#test#SetFilename('../test_c_projects/configure_project/subdir/file.cpp')
+  let g:ale_cpp_clang_options = ''
+
+  AssertLinter 'clang++',
+  \   ale#Escape('clang++')
+  \   . ' -S -x c++ -fsyntax-only '
+  \   . '-iquote ' . ale#Escape(ale#path#Simplify(g:dir .  '/../test_c_projects/configure_project/subdir'))
+  \   . ' -I' . ale#Escape(ale#path#Simplify(g:dir .  '/../test_c_projects/configure_project/include'))
+  \   . ' -'
+
+Execute(The C++ Clang handler should include root directories for projects with .h files in them):
+  call ale#assert#SetUpLinterTest('cpp', 'clang')
+  call ale#test#SetFilename('../test_c_projects/h_file_project/subdir/file.cpp')
+  let g:ale_cpp_clang_options = ''
+
+  AssertLinter 'clang++',
+  \   ale#Escape('clang++')
+  \   . ' -S -x c++ -fsyntax-only '
+  \   . '-iquote ' . ale#Escape(ale#path#Simplify(g:dir .  '/../test_c_projects/h_file_project/subdir'))
+  \   . ' -I' . ale#Escape(ale#path#Simplify(g:dir .  '/../test_c_projects/h_file_project'))
+  \   . ' -'
+
+Execute(The C++ Clang handler should include root directories for projects with .hpp files in them):
+  call ale#assert#SetUpLinterTest('cpp', 'clang')
+  call ale#test#SetFilename('../test_c_projects/hpp_file_project/subdir/file.cpp')
+  let g:ale_cpp_clang_options = ''
+
+  AssertLinter 'clang++',
+  \   ale#Escape('clang++')
+  \   . ' -S -x c++ -fsyntax-only '
+  \   . '-iquote ' . ale#Escape(ale#path#Simplify(g:dir .  '/../test_c_projects/hpp_file_project/subdir'))
+  \   . ' -I' . ale#Escape(ale#path#Simplify(g:dir .  '/../test_c_projects/hpp_file_project'))
+  \   . ' -'
+
+Execute(The C++ ClangTidy handler should include json folders for projects with suitable build directory in them):
+  call ale#assert#SetUpLinterTest('cpp', 'clangtidy')
+  call ale#test#SetFilename('../test_c_projects/json_project/subdir/file.cpp')
+
+  AssertLinter 'clang-tidy',
+  \ ale#Escape('clang-tidy')
+  \   . ' -checks=' . ale#Escape('*') . ' %s '
+  \   . '-p ' . ale#Escape(ale#path#Simplify(g:dir . '/../test_c_projects/json_project/build'))

test/command_callback/test_cuda_nvcc_command_callbacks.vader

@@ -12,3 +12,9 @@ Execute(The executable should be configurable):
 
   AssertLinter 'foobar',
   \ ale#Escape('foobar') . ' -cuda -std=c++11 %s -o ' . g:ale#util#nul_file
+
+Execute(The options should be configurable):
+  let g:ale_cuda_nvcc_options = '--foobar'
+
+  AssertLinter 'nvcc',
+  \ ale#Escape('nvcc') . ' -cuda --foobar %s -o ' . g:ale#util#nul_file

test/command_callback/test_elm_make_command_callback.vader

@@ -0,0 +1,32 @@
+Before:
+  call ale#assert#SetUpLinterTest('elm', 'make')
+
+After:
+  unlet! g:executable
+
+  call ale#assert#TearDownLinterTest()
+
+Execute(should get valid executable with default params):
+  call ale#test#SetFilename('../elm-test-files/app/testfile.elm')
+
+  let g:executable = ale#path#Simplify(g:dir . '/../elm-test-files/app/node_modules/.bin/elm')
+
+  AssertLinter g:executable,
+  \ ale#Escape(g:executable) . ' make --report=json --output=/dev/null %t'
+
+Execute(should get valid executable with 'use_global' params):
+  let g:ale_elm_make_use_global = 1
+
+  call ale#test#SetFilename('../elm-test-files/app/testfile.elm')
+
+  AssertLinter 'elm',
+  \ ale#Escape('elm') . ' make --report=json --output=/dev/null %t'
+
+Execute(should get valid executable with 'use_global' and 'executable' params):
+  let g:ale_elm_make_executable = 'other-elm'
+  let g:ale_elm_make_use_global = 1
+
+  call ale#test#SetFilename('../elm-test-files/app/testfile.elm')
+
+  AssertLinter 'other-elm',
+  \ ale#Escape('other-elm') . ' make --report=json --output=/dev/null %t'

test/command_callback/test_fsc_command_callback.vader

@@ -10,4 +10,4 @@ Execute(The default executable and command should be correct):
 
 Given scala.sbt(An empty SBT file):
 Execute(fsc should not be run for sbt files):
-  AssertLinter '', ''
+  AssertLinterNotExecuted

test/command_callback/test_gfortran_command_callback.vader

@@ -5,20 +5,20 @@ After:
   call ale#assert#TearDownLinterTest()
 
 Execute(The fortran gcc command callback should return the correct default string):
-  AssertLinter 'gcc', 'gcc -S -x f95 -fsyntax-only -ffree-form -Wall -'
+  AssertLinter 'gcc', ale#Escape('gcc') . ' -S -x f95 -fsyntax-only -ffree-form -Wall -'
 
 Execute(The fortran gcc command callback should let you set options):
   let g:ale_fortran_gcc_options = '-Wotherthings'
 
-  AssertLinter 'gcc', 'gcc -S -x f95 -fsyntax-only -ffree-form -Wotherthings -'
+  AssertLinter 'gcc', ale#Escape('gcc') . ' -S -x f95 -fsyntax-only -ffree-form -Wotherthings -'
 
 Execute(The fortran gcc command callback should let you use -ffixed-form):
   let g:ale_fortran_gcc_use_free_form = 0
 
-  AssertLinter 'gcc', 'gcc -S -x f95 -fsyntax-only -ffixed-form -Wall -'
+  AssertLinter 'gcc', ale#Escape('gcc') . ' -S -x f95 -fsyntax-only -ffixed-form -Wall -'
 
 Execute(The fortran executable should be configurable):
   let g:ale_fortran_gcc_executable = 'gfortran'
 
   AssertLinter 'gfortran',
-  \ 'gfortran -S -x f95 -fsyntax-only -ffree-form -Wall -'
+  \ ale#Escape('gfortran') . ' -S -x f95 -fsyntax-only -ffree-form -Wall -'

test/command_callback/test_mercury_mmc_command_callback.vader

@@ -8,18 +8,18 @@ After:
 Execute(The default command should be correct):
   AssertLinter 'mmc',
   \ ale#path#BufferCdString(bufnr(''))
-  \ . 'mmc --errorcheck-only --make --output-compile-error-lines 100 dummy'
+  \ . ale#Escape('mmc') . ' --errorcheck-only --make --output-compile-error-lines 100 dummy'
 
 Execute(The executable should be configurable):
   let b:ale_mercury_mmc_executable = 'foo'
 
   AssertLinter 'foo',
   \ ale#path#BufferCdString(bufnr(''))
-  \ . 'foo --errorcheck-only --make --output-compile-error-lines 100 dummy'
+  \ . ale#Escape('foo') . ' --errorcheck-only --make --output-compile-error-lines 100 dummy'
 
 Execute(The options should be configurable):
   let b:ale_mercury_mmc_options = '--bar'
 
   AssertLinter 'mmc',
   \ ale#path#BufferCdString(bufnr(''))
-  \ . 'mmc --errorcheck-only --bar dummy'
+  \ . ale#Escape('mmc') . ' --errorcheck-only --bar dummy'

test/command_callback/test_phpcs_command_callback.vader

@@ -0,0 +1,29 @@
+Before:
+  call ale#assert#SetUpLinterTest('php', 'phpcs')
+
+After:
+  unlet! g:executable
+
+  call ale#assert#TearDownLinterTest()
+
+Execute(The local phpcs executable should be used):
+  call ale#test#SetFilename('../phpcs-test-files/project-with-phpcs/foo/test.php')
+
+  let g:executable = ale#path#Simplify(g:dir . '/../phpcs-test-files/project-with-phpcs/vendor/bin/phpcs')
+
+  AssertLinter g:executable,
+  \ ale#Escape(g:executable) . ' -s --report=emacs --stdin-path=%s'
+
+Execute(use_global should override local executable detection):
+  let g:ale_php_phpcs_use_global = 1
+
+  call ale#test#SetFilename('../phpcs-test-files/project-with-phpcs/foo/test.php')
+
+  AssertLinter 'phpcs',
+  \ ale#Escape('phpcs') . ' -s --report=emacs --stdin-path=%s'
+
+Execute(Projects without local executables should use the global one):
+  call ale#test#SetFilename('../phpcs-test-files/project-without-phpcs/foo/test.php')
+
+  AssertLinter 'phpcs',
+  \ ale#Escape('phpcs') . ' -s --report=emacs --stdin-path=%s'

test/command_callback/test_scalac_command_callback.vader

@@ -10,4 +10,4 @@ Execute(The default executable and command should be correct):
 
 Given scala.sbt(An empty SBT file):
 Execute(scalac should not be run for sbt files):
-  AssertLinter '', ''
+  AssertLinterNotExecuted

test/command_callback/test_swaglint_command_callback.vader

@@ -5,25 +5,25 @@ After:
   call ale#assert#TearDownLinterTest()
 
 Execute(The yaml swaglint command callback should return the correct default string):
-  AssertLinter 'swaglint', 'swaglint -r compact --stdin'
+  AssertLinter 'swaglint', ale#Escape('swaglint') . ' -r compact --stdin'
 
 Execute(The yaml swaglint command callback should be configurable):
   let g:ale_yaml_swaglint_executable = '~/.local/bin/swaglint'
 
   AssertLinter '~/.local/bin/swaglint',
-  \ '~/.local/bin/swaglint -r compact --stdin'
+  \ ale#Escape('~/.local/bin/swaglint') . ' -r compact --stdin'
 
 Execute(The yaml swaglint command callback should allow a global installation to be used):
   let g:ale_yaml_swaglint_executable = '/usr/local/bin/swaglint'
   let g:ale_yaml_swaglint_use_global = 1
 
   AssertLinter '/usr/local/bin/swaglint',
-  \ '/usr/local/bin/swaglint -r compact --stdin'
+  \ ale#Escape('/usr/local/bin/swaglint') . ' -r compact --stdin'
 
 Execute(The yaml swaglint command callback should allow a local installation to be used):
   call ale#test#SetFilename('swaglint_paths/docs/swagger.yaml')
 
   AssertLinter
   \ ale#path#Simplify(g:dir . '/swaglint_paths/node_modules/.bin/swaglint'),
-  \ ale#path#Simplify(g:dir . '/swaglint_paths/node_modules/.bin/swaglint')
+  \ ale#Escape(ale#path#Simplify(g:dir . '/swaglint_paths/node_modules/.bin/swaglint'))
   \   . ' -r compact --stdin'

test/command_callback/test_terraform_tflint_command_callback.vader

@@ -17,3 +17,12 @@ Execute(Overriding options should work):
   let g:ale_terraform_tflint_options = '--whatever'
 
   AssertLinter 'fnord', ale#Escape('fnord') . ' --whatever -f json %t'
+
+Execute(Configuration files should be found):
+  call ale#test#SetFilename('../tflint-test-files/foo/bar.tf')
+
+  AssertLinter 'tflint',
+  \ ale#Escape('tflint')
+  \   . ' --config '
+  \   . ale#Escape(ale#path#Simplify(g:dir . '/../tflint-test-files/foo/.tflint.hcl'))
+  \   . ' -f json %t'

test/test_c_import_paths.vader

@@ -1,254 +0,0 @@
-Before:
-  " Make sure the c.vim file is loaded first.
-  call ale#c#FindProjectRoot(bufnr(''))
-
-  Save g:ale_c_parse_makefile
-  Save g:ale_c_gcc_options
-  Save g:ale_c_clang_options
-  Save g:ale_cpp_gcc_options
-  Save g:ale_cpp_clang_options
-  Save g:__ale_c_project_filenames
-
-  let g:original_project_filenames = g:__ale_c_project_filenames
-
-  " Remove the .git/HEAD dir for C import paths for these tests.
-  " The tests run inside of a git repo.
-  let g:__ale_c_project_filenames = filter(
-  \ copy(g:__ale_c_project_filenames),
-  \ 'v:val isnot# ''.git/HEAD'''
-  \)
-
-  call ale#test#SetDirectory('/testplugin/test')
-
-  let g:ale_c_parse_makefile = 0
-  let g:ale_c_gcc_options = ''
-  let g:ale_c_clang_options = ''
-  let g:ale_cpp_gcc_options = ''
-  let g:ale_cpp_clang_options = ''
-
-After:
-  Restore
-
-  unlet! g:original_project_filenames
-
-  call ale#test#RestoreDirectory()
-  call ale#linter#Reset()
-
-Execute(The C GCC handler should include 'include' directories for projects with a Makefile):
-  runtime! ale_linters/c/gcc.vim
-
-  call ale#test#SetFilename('test_c_projects/makefile_project/subdir/file.c')
-
-  AssertEqual
-  \ ale#Escape('gcc')
-  \   . ' -S -x c -fsyntax-only '
-  \   . '-iquote ' . ale#Escape(ale#path#Simplify(g:dir .  '/test_c_projects/makefile_project/subdir')) . ' '
-  \   . ' -I' . ale#Escape(ale#path#Simplify(g:dir .  '/test_c_projects/makefile_project/include')) . ' '
-  \   . ' -'
-  \ , ale_linters#c#gcc#GetCommand(bufnr(''), [])
-
-Execute(The C GCC handler should include 'include' directories for projects with a configure file):
-  runtime! ale_linters/c/gcc.vim
-
-  call ale#test#SetFilename('test_c_projects/configure_project/subdir/file.c')
-
-  AssertEqual
-  \ ale#Escape('gcc')
-  \   . ' -S -x c -fsyntax-only '
-  \   . '-iquote ' . ale#Escape(ale#path#Simplify(g:dir .  '/test_c_projects/configure_project/subdir')) . ' '
-  \   . ' -I' . ale#Escape(ale#path#Simplify(g:dir .  '/test_c_projects/configure_project/include')) . ' '
-  \   . ' -'
-  \ , ale_linters#c#gcc#GetCommand(bufnr(''), [])
-
-Execute(The C GCC handler should include root directories for projects with .h files in them):
-  runtime! ale_linters/c/gcc.vim
-
-  call ale#test#SetFilename('test_c_projects/h_file_project/subdir/file.c')
-
-  AssertEqual
-  \ ale#Escape('gcc')
-  \   . ' -S -x c -fsyntax-only '
-  \   . '-iquote ' . ale#Escape(ale#path#Simplify(g:dir .  '/test_c_projects/h_file_project/subdir')) . ' '
-  \   . ' -I' . ale#Escape(ale#path#Simplify(g:dir .  '/test_c_projects/h_file_project')) . ' '
-  \   . ' -'
-  \ , ale_linters#c#gcc#GetCommand(bufnr(''), [])
-
-Execute(The C GCC handler should include root directories for projects with .hpp files in them):
-  runtime! ale_linters/c/gcc.vim
-
-  call ale#test#SetFilename('test_c_projects/hpp_file_project/subdir/file.c')
-
-  AssertEqual
-  \ ale#Escape('gcc')
-  \   . ' -S -x c -fsyntax-only '
-  \   . '-iquote ' . ale#Escape(ale#path#Simplify(g:dir .  '/test_c_projects/hpp_file_project/subdir')) . ' '
-  \   . ' -I' . ale#Escape(ale#path#Simplify(g:dir .  '/test_c_projects/hpp_file_project')) . ' '
-  \   . ' -'
-  \ , ale_linters#c#gcc#GetCommand(bufnr(''), [])
-
-Execute(The C Clang handler should include 'include' directories for projects with a Makefile):
-  runtime! ale_linters/c/clang.vim
-
-  call ale#test#SetFilename('test_c_projects/makefile_project/subdir/file.c')
-
-  AssertEqual
-  \   ale#Escape('clang')
-  \   . ' -S -x c -fsyntax-only '
-  \   . '-iquote ' . ale#Escape(ale#path#Simplify(g:dir .  '/test_c_projects/makefile_project/subdir')) . ' '
-  \   . ' -I' . ale#Escape(ale#path#Simplify(g:dir .  '/test_c_projects/makefile_project/include')) . ' '
-  \   . ' -'
-  \ , ale_linters#c#clang#GetCommand(bufnr(''), [])
-
-Execute(The C Clang handler should include 'include' directories for projects with a configure file):
-  runtime! ale_linters/c/clang.vim
-
-  call ale#test#SetFilename('test_c_projects/h_file_project/subdir/file.c')
-
-  AssertEqual
-  \   ale#Escape('clang')
-  \   . ' -S -x c -fsyntax-only '
-  \   . '-iquote ' . ale#Escape(ale#path#Simplify(g:dir .  '/test_c_projects/h_file_project/subdir')) . ' '
-  \   . ' -I' . ale#Escape(ale#path#Simplify(g:dir .  '/test_c_projects/h_file_project')) . ' '
-  \   . ' -'
-  \ , ale_linters#c#clang#GetCommand(bufnr(''), [])
-
-Execute(The C Clang handler should include root directories for projects with .h files in them):
-  runtime! ale_linters/c/clang.vim
-
-  call ale#test#SetFilename('test_c_projects/h_file_project/subdir/file.c')
-
-  AssertEqual
-  \   ale#Escape('clang')
-  \   . ' -S -x c -fsyntax-only '
-  \   . '-iquote ' . ale#Escape(ale#path#Simplify(g:dir .  '/test_c_projects/h_file_project/subdir')) . ' '
-  \   . ' -I' . ale#Escape(ale#path#Simplify(g:dir .  '/test_c_projects/h_file_project')) . ' '
-  \   . ' -'
-  \ , ale_linters#c#clang#GetCommand(bufnr(''), [])
-
-Execute(The C Clang handler should include root directories for projects with .hpp files in them):
-  runtime! ale_linters/c/clang.vim
-
-  call ale#test#SetFilename('test_c_projects/hpp_file_project/subdir/file.c')
-
-  AssertEqual
-  \   ale#Escape('clang')
-  \   . ' -S -x c -fsyntax-only '
-  \   . '-iquote ' . ale#Escape(ale#path#Simplify(g:dir .  '/test_c_projects/hpp_file_project/subdir')) . ' '
-  \   . ' -I' . ale#Escape(ale#path#Simplify(g:dir .  '/test_c_projects/hpp_file_project')) . ' '
-  \   . ' -'
-  \ , ale_linters#c#clang#GetCommand(bufnr(''), [])
-
-Execute(The C++ GCC handler should include 'include' directories for projects with a Makefile):
-  runtime! ale_linters/cpp/gcc.vim
-
-  call ale#test#SetFilename('test_c_projects/makefile_project/subdir/file.cpp')
-
-  AssertEqual
-  \   ale#Escape('gcc')
-  \   . ' -S -x c++ -fsyntax-only '
-  \   . '-iquote ' . ale#Escape(ale#path#Simplify(g:dir .  '/test_c_projects/makefile_project/subdir')) . ' '
-  \   . ' -I' . ale#Escape(ale#path#Simplify(g:dir .  '/test_c_projects/makefile_project/include')) . ' '
-  \   . ' -'
-  \ , ale_linters#cpp#gcc#GetCommand(bufnr(''), [])
-
-Execute(The C++ GCC handler should include 'include' directories for projects with a configure file):
-  runtime! ale_linters/cpp/gcc.vim
-
-  call ale#test#SetFilename('test_c_projects/configure_project/subdir/file.cpp')
-
-  AssertEqual
-  \   ale#Escape('gcc')
-  \   . ' -S -x c++ -fsyntax-only '
-  \   . '-iquote ' . ale#Escape(ale#path#Simplify(g:dir .  '/test_c_projects/configure_project/subdir')) . ' '
-  \   . ' -I' . ale#Escape(ale#path#Simplify(g:dir .  '/test_c_projects/configure_project/include')) . ' '
-  \   . ' -'
-  \ , ale_linters#cpp#gcc#GetCommand(bufnr(''), [])
-
-Execute(The C++ GCC handler should include root directories for projects with .h files in them):
-  runtime! ale_linters/cpp/gcc.vim
-
-  call ale#test#SetFilename('test_c_projects/h_file_project/subdir/file.cpp')
-
-  AssertEqual
-  \   ale#Escape('gcc')
-  \   . ' -S -x c++ -fsyntax-only '
-  \   . '-iquote ' . ale#Escape(ale#path#Simplify(g:dir .  '/test_c_projects/h_file_project/subdir')) . ' '
-  \   . ' -I' . ale#Escape(ale#path#Simplify(g:dir .  '/test_c_projects/h_file_project')) . ' '
-  \   . ' -'
-  \ , ale_linters#cpp#gcc#GetCommand(bufnr(''), [])
-
-Execute(The C++ GCC handler should include root directories for projects with .hpp files in them):
-  runtime! ale_linters/cpp/gcc.vim
-
-  call ale#test#SetFilename('test_c_projects/hpp_file_project/subdir/file.cpp')
-
-  AssertEqual
-  \   ale#Escape('gcc')
-  \   . ' -S -x c++ -fsyntax-only '
-  \   . '-iquote ' . ale#Escape(ale#path#Simplify(g:dir .  '/test_c_projects/hpp_file_project/subdir')) . ' '
-  \   . ' -I' . ale#Escape(ale#path#Simplify(g:dir .  '/test_c_projects/hpp_file_project')) . ' '
-  \   . ' -'
-  \ , ale_linters#cpp#gcc#GetCommand(bufnr(''), [])
-
-Execute(The C++ Clang handler should include 'include' directories for projects with a Makefile):
-  runtime! ale_linters/cpp/clang.vim
-
-  call ale#test#SetFilename('test_c_projects/makefile_project/subdir/file.cpp')
-
-  AssertEqual
-  \   ale#Escape('clang++')
-  \   . ' -S -x c++ -fsyntax-only '
-  \   . '-iquote ' . ale#Escape(ale#path#Simplify(g:dir .  '/test_c_projects/makefile_project/subdir')) . ' '
-  \   . ' -I' . ale#Escape(ale#path#Simplify(g:dir .  '/test_c_projects/makefile_project/include')) . ' '
-  \   . ' -'
-  \ , ale_linters#cpp#clang#GetCommand(bufnr(''), [])
-
-Execute(The C++ Clang handler should include 'include' directories for projects with a configure file):
-  runtime! ale_linters/cpp/clang.vim
-
-  call ale#test#SetFilename('test_c_projects/configure_project/subdir/file.cpp')
-
-  AssertEqual
-  \   ale#Escape('clang++')
-  \   . ' -S -x c++ -fsyntax-only '
-  \   . '-iquote ' . ale#Escape(ale#path#Simplify(g:dir .  '/test_c_projects/configure_project/subdir')) . ' '
-  \   . ' -I' . ale#Escape(ale#path#Simplify(g:dir .  '/test_c_projects/configure_project/include')) . ' '
-  \   . ' -'
-  \ , ale_linters#cpp#clang#GetCommand(bufnr(''), [])
-
-Execute(The C++ Clang handler should include root directories for projects with .h files in them):
-  runtime! ale_linters/cpp/clang.vim
-
-  call ale#test#SetFilename('test_c_projects/h_file_project/subdir/file.cpp')
-
-  AssertEqual
-  \   ale#Escape('clang++')
-  \   . ' -S -x c++ -fsyntax-only '
-  \   . '-iquote ' . ale#Escape(ale#path#Simplify(g:dir .  '/test_c_projects/h_file_project/subdir')) . ' '
-  \   . ' -I' . ale#Escape(ale#path#Simplify(g:dir .  '/test_c_projects/h_file_project')) . ' '
-  \   . ' -'
-  \ , ale_linters#cpp#clang#GetCommand(bufnr(''), [])
-
-Execute(The C++ Clang handler should include root directories for projects with .hpp files in them):
-  runtime! ale_linters/cpp/clang.vim
-
-  call ale#test#SetFilename('test_c_projects/hpp_file_project/subdir/file.cpp')
-
-  AssertEqual
-  \   ale#Escape('clang++')
-  \   . ' -S -x c++ -fsyntax-only '
-  \   . '-iquote ' . ale#Escape(ale#path#Simplify(g:dir .  '/test_c_projects/hpp_file_project/subdir')) . ' '
-  \   . ' -I' . ale#Escape(ale#path#Simplify(g:dir .  '/test_c_projects/hpp_file_project')) . ' '
-  \   . ' -'
-  \ , ale_linters#cpp#clang#GetCommand(bufnr(''), [])
-
-Execute(The C++ ClangTidy handler should include json folders for projects with suitable build directory in them):
-  runtime! ale_linters/cpp/clangtidy.vim
-
-  call ale#test#SetFilename('test_c_projects/json_project/subdir/file.cpp')
-
-  AssertEqual
-  \ ale#Escape('clang-tidy')
-  \   . ' -checks=' . ale#Escape('*') . ' %s '
-  \   . '-p ' . ale#Escape(ale#path#Simplify(g:dir . '/test_c_projects/json_project/build'))
-  \ , ale_linters#cpp#clangtidy#GetCommand(bufnr(''))

test/test_elm_executable_detection.vader

@@ -1,36 +0,0 @@
-Before:
-  call ale#test#SetDirectory('/testplugin/test')
-  runtime ale_linters/elm/make.vim
-
-After:
-  unlet! g:ale_elm_make_use_global
-  unlet! g:ale_elm_make_executable
-
-  call ale#test#RestoreDirectory()
-
-Execute(should get valid executable with default params):
-  call ale#test#SetFilename('elm-test-files/app/testfile.elm')
-
-  AssertEqual
-  \ ale#path#Simplify(g:dir . '/elm-test-files/app/node_modules/.bin/elm'),
-  \ ale_linters#elm#make#GetExecutable(bufnr(''))
-
-Execute(should get valid executable with 'use_global' params):
-  let g:ale_elm_make_use_global = 1
-
-  call ale#test#SetFilename('elm-test-files/app/testfile.elm')
-
-  AssertEqual
-  \ 'elm',
-  \ ale_linters#elm#make#GetExecutable(bufnr(''))
-
-Execute(should get valid executable with 'use_global' and 'executable' params):
-  let g:ale_elm_make_executable = 'other-elm'
-  let g:ale_elm_make_use_global = 1
-
-  call ale#test#SetFilename('elm-test-files/app/testfile.elm')
-
-  AssertEqual
-  \ 'other-elm',
-  \ ale_linters#elm#make#GetExecutable(bufnr(''))
-

test/test_phpcs_executable_detection.vader

@@ -1,39 +0,0 @@
-Before:
-  Save g:ale_php_phpcs_executable
-  Save g:ale_php_phpcs_use_global
-
-  let g:ale_php_phpcs_executable = 'phpcs_test'
-  let g:ale_php_phpcs_use_global = 0
-
-  call ale#test#SetDirectory('/testplugin/test')
-
-  runtime ale_linters/php/phpcs.vim
-
-After:
-  Restore
-
-  call ale#test#RestoreDirectory()
-  call ale#linter#Reset()
-
-Execute(project with phpcs should use local by default):
-  call ale#test#SetFilename('phpcs-test-files/project-with-phpcs/foo/test.php')
-
-  AssertEqual
-  \ ale#path#Simplify(g:dir . '/phpcs-test-files/project-with-phpcs/vendor/bin/phpcs'),
-  \ ale_linters#php#phpcs#GetExecutable(bufnr(''))
-
-Execute(use-global should override local detection):
-  let g:ale_php_phpcs_use_global = 1
-
-  call ale#test#SetFilename('phpcs-test-files/project-with-phpcs/foo/test.php')
-
-  AssertEqual
-  \ 'phpcs_test',
-  \ ale_linters#php#phpcs#GetExecutable(bufnr(''))
-
-Execute(project without phpcs should use global):
-  call ale#test#SetFilename('phpcs-test-files/project-without-phpcs/foo/test.php')
-
-  AssertEqual
-  \ 'phpcs_test',
-  \ ale_linters#php#phpcs#GetExecutable(bufnr(''))

test/test_tflint_config_detection.vader

@@ -1,18 +0,0 @@
-Before:
-  call ale#test#SetDirectory('/testplugin/test')
-  runtime ale_linters/terraform/tflint.vim
-
-After:
-  call ale#test#RestoreDirectory()
-  call ale#linter#Reset()
-
-Execute(adjacent config file should be found):
-  call ale#test#SetFilename('tflint-test-files/foo/bar.tf')
-  AssertEqual
-  \ (
-  \   ale#Escape('tflint')
-  \   . ' --config '
-  \   . ale#Escape(ale#path#Simplify(g:dir . '/tflint-test-files/foo/.tflint.hcl'))
-  \   . ' -f json %t'
-  \ ),
-  \ ale_linters#terraform#tflint#GetCommand(bufnr(''))