Merge pull request #243 from SabatierBoris/master

Add options for pylint linter

ale_linters/python/pylint.vim

@@ -1,9 +1,26 @@
 " Author: keith <k@keith.so>
 " Description: pylint for python files
 
+let g:ale_python_pylint_executable =
+\   get(g:, 'ale_python_pylint_executable', 'pylint')
+
+let g:ale_python_pylint_args =
+\   get(g:, 'ale_python_pylint_args', '')
+
+function! ale_linters#python#pylint#GetExecutable(buffer) abort
+    return g:ale_python_pylint_executable
+endfunction
+
+function! ale_linters#python#pylint#GetCommand(buffer) abort
+    return g:ale#util#stdin_wrapper . ' .py '
+    \   . ale_linters#python#pylint#GetExecutable(a:buffer)
+    \   . ' ' . g:ale_python_pylint_args
+    \   . ' --output-format text --msg-template="{path}:{line}:{column}: {msg_id} {msg}" --reports n'
+endfunction
+
 call ale#linter#Define('python', {
 \   'name': 'pylint',
-\   'executable': 'pylint',
+\   'executable_callback': 'ale_linters#python#pylint#GetExecutable',
-\   'command': g:ale#util#stdin_wrapper . ' .py pylint --output-format text --msg-template="{path}:{line}:{column}: {msg_id} {msg}" --reports n',
+\   'command_callback': 'ale_linters#python#pylint#GetCommand',
 \   'callback': 'ale#handlers#HandlePEP8Format',
 \})

doc/ale.txt

@@ -32,6 +32,7 @@ CONTENTS                                                         *ale-contents*
     4.20. lacheck...............................|ale-linter-options-lacheck|
     4.21. stylelint.............................|ale-linter-options-stylelint|
     4.22. rustc.................................|ale-linter-options-rustc|
+    4.23. python-pylint.........................|ale-linter-options-python-pylint|
   5. Linter Integration Notes...................|ale-linter-integration|
     5.1.  merlin................................|ale-linter-integration-ocaml-merlin|
     5.2. rust...................................|ale-integration-rust|
@@ -791,6 +792,34 @@ g:ale_rust_ignore_error_codes                  *g:ale_rust_ignore_error_codes*
   >
   let g:ale_rust_ignore_error_codes = ['E0432', 'E0433']
 
+-------------------------------------------------------------------------------
+4.23. python-pylint                          *ale-linter-options-python-pylint*
+
+g:ale_python_pylint_executable                 *g:ale_python_pylint_executable*
+
+  Type: |String|
+  Default: `'pylint'`
+
+  This variable can be changed to modify the executable used for pylint.
+
+
+g:ale_python_pylint_args                             *g:ale_python_pylint_args*
+
+  Type: |String|
+  Default: `''`
+
+  This variable can be changed to add command-line arguments to the pylint
+  invocation.
+
+For example, to dynamically switch between programs targeting Python 2 and
+Python 3, you may want to set >
+
+  let g:ale_python_pylint_executable = 'python3'   " or 'python' for Python 2
+  let g:ale_python_pylint_args = '-rcfile /path/to/pylint.rc'
+
+after making sure it's installed for the appropriate Python versions (e.g.
+`python3 -m pip install --user pylint`).
+
 ===============================================================================
 5. Linter Integration Notes                            *ale-linter-integration*