Close #1504 - Add an option for removing --respect-pragma for flow

ale_linters/javascript/flow.vim

@@ -5,6 +5,7 @@
 call ale#Set('javascript_flow_executable', 'flow')
 call ale#Set('javascript_flow_use_home_config', 0)
 call ale#Set('javascript_flow_use_global', get(g:, 'ale_use_global_executables', 0))
+call ale#Set('javascript_flow_use_respect_pragma', 1)
 
 function! ale_linters#javascript#flow#GetExecutable(buffer) abort
     let l:flow_config = ale#path#FindNearestFile(a:buffer, '.flowconfig')
@@ -47,8 +48,8 @@ function! ale_linters#javascript#flow#GetCommand(buffer, version_lines) abort
 
     " If we can parse the version number, then only use --respect-pragma
     " if the version is >= 0.36.0, which added the argument.
-    let l:use_respect_pragma = empty(l:version)
+    let l:use_respect_pragma = ale#Var(a:buffer, 'javascript_flow_use_respect_pragma')
-    \   || ale#semver#GTE(l:version, [0, 36])
+    \   && (empty(l:version) || ale#semver#GTE(l:version, [0, 36]))
 
     return ale#Escape(l:executable)
     \   . ' check-contents'

doc/ale-javascript.txt

@@ -103,6 +103,17 @@ g:ale_javascript_flow_use_global             *g:ale_javascript_flow_use_global*
   See |ale-integrations-local-executables|
 
 
+g:ale_javascript_flow_use_respect_pragma
+                                     *g:ale_javascript_flow_use_respect_pragma*
+                                     *b:ale_javascript_flow_use_respect_pragma*
+  Type: |Number|
+  Default: `1`
+
+  By default, ALE will use the `--respect-pragma` option for `flow`, so only
+  files with the `@flow` pragma are checked by ALE. This option can be set to
+  `0` to disable that behaviour, so all files can be checked by `flow`.
+
+
 ===============================================================================
 importjs                                              *ale-javascript-importjs*
 

test/test_flow_command.vader

@@ -1,8 +1,11 @@
 Before:
   runtime ale_linters/javascript/flow.vim
+
   call ale#test#SetDirectory('/testplugin/test')
 
 After:
+  unlet! b:ale_javascript_flow_use_respect_pragma
+
   call ale#test#RestoreDirectory()
   call ale#linter#Reset()
   call ale#semver#ResetVersionCache()
@@ -15,6 +18,16 @@ Execute(flow should return a command to run if a .flowconfig file exists):
   \   . ' check-contents --respect-pragma --json --from ale %s',
   \ ale_linters#javascript#flow#GetCommand(bufnr('%'), [])
 
+Execute(flow should not use the respect pragma argument if the option is off):
+  call ale#test#SetFilename('flow/a/sub/dummy')
+
+  let b:ale_javascript_flow_use_respect_pragma = 0
+
+  AssertEqual
+  \ ale#Escape('flow')
+  \   . ' check-contents --json --from ale %s',
+  \ ale_linters#javascript#flow#GetCommand(bufnr('%'), [])
+
 Execute(flow should should not use --respect-pragma for old versions):
   call ale#test#SetFilename('flow/a/sub/dummy')