#659 - Add options for Python fixers, and cut down on duplicated documentation

autoload/ale/fixers/autopep8.vim

@@ -1,13 +1,26 @@
 " Author: w0rp <devw0rp@gmail.com>
 " Description: Fixing files with autopep8.
 
+call ale#Set('python_autopep8_executable', 'autopep8')
+call ale#Set('python_autopep8_use_global', 0)
+call ale#Set('python_autopep8_options', '')
+
 function! ale#fixers#autopep8#Fix(buffer) abort
-    let l:executable = ale#python#GetExecutable(a:buffer, 'autopep8')
+    let l:executable = ale#python#FindExecutable(
+    \   a:buffer,
+    \   'python_autopep8',
+    \   ['/bin/autopep8'],
+    \)
+
     if empty(l:executable)
         return 0
     endif
 
+    let l:options = ale#Var(a:buffer, 'python_autopep8_options')
+
     return {
-    \   'command': ale#Escape(l:executable) . ' -'
+    \   'command': ale#Escape(l:executable)
+    \       . (!empty(l:options) ? ' ' . l:options : '')
+    \       . ' -',
     \}
 endfunction

autoload/ale/fixers/isort.vim

@@ -1,8 +1,16 @@
 " Author: w0rp <devw0rp@gmail.com>
 " Description: Fixing Python imports with isort.
 
+call ale#Set('python_isort_executable', 'isort')
+call ale#Set('python_isort_use_global', 0)
+
 function! ale#fixers#isort#Fix(buffer) abort
-    let l:executable = ale#python#GetExecutable(a:buffer, 'isort')
+    let l:executable = ale#python#FindExecutable(
+    \   a:buffer,
+    \   'python_isort',
+    \   ['/bin/isort'],
+    \)
+
     if empty(l:executable)
         return 0
     endif

autoload/ale/fixers/yapf.vim

@@ -1,8 +1,16 @@
 " Author: w0rp <devw0rp@gmail.com>
 " Description: Fixing Python files with yapf.
 
+call ale#Set('python_yapf_executable', 'yapf')
+call ale#Set('python_yapf_use_global', 0)
+
 function! ale#fixers#yapf#Fix(buffer) abort
-    let l:executable = ale#python#GetExecutable(a:buffer, 'yapf')
+    let l:executable = ale#python#FindExecutable(
+    \   a:buffer,
+    \   'python_yapf',
+    \   ['/bin/yapf'],
+    \)
+
     if empty(l:executable)
         return 0
     endif