Fix #2054 - Make golint configurable

ale_linters/go/golint.vim

@@ -1,10 +1,21 @@
 " Author: neersighted <bjorn@neersighted.com>
 " Description: golint for Go files
 
+call ale#Set('go_golint_executable', 'golint')
+call ale#Set('go_golint_options', '')
+
+function! ale_linters#go#golint#GetCommand(buffer) abort
+    let l:options = ale#Var(a:buffer, 'go_golint_options')
+
+    return '%e'
+    \   . (!empty(l:options) ? ' ' . l:options : '')
+    \   . ' %t'
+endfunction
+
 call ale#linter#Define('go', {
 \   'name': 'golint',
 \   'output_stream': 'both',
-\   'executable': 'golint',
-\   'command': 'golint %t',
+\   'executable_callback': ale#VarFunc('go_golint_executable'),
+\   'command_callback': 'ale_linters#go#golint#GetCommand',
 \   'callback': 'ale#handlers#unix#HandleAsWarning',
 \})

doc/ale-go.txt

@@ -53,6 +53,25 @@ g:ale_go_gofmt_options                                 *g:ale_go_gofmt_options*
   This variable can be set to pass additional options to the gofmt fixer.
 
 
+===============================================================================
+golint                                                          *ale-go-golint*
+
+g:ale_go_golint_executable                         *g:ale_go_golint_executable*
+                                                   *b:ale_go_golint_executable*
+  Type: |String|
+  Default: `'golint'`
+
+  This variable can be set to change the golint executable path.
+
+
+g:ale_go_golint_options                               *g:ale_go_golint_options*
+                                                      *b:ale_go_golint_options*
+  Type: |String|
+  Default: `''`
+
+  This variable can be set to pass additional options to the golint linter.
+
+
 ===============================================================================
 govet                                                            *ale-go-govet*
 

doc/ale.txt

@@ -108,6 +108,7 @@ CONTENTS                                                         *ale-contents*
     go....................................|ale-go-options|
       gobuild.............................|ale-go-gobuild|
       gofmt...............................|ale-go-gofmt|
+      golint..............................|ale-go-golint|
       govet...............................|ale-go-govet|
       gometalinter........................|ale-go-gometalinter|
       staticcheck.........................|ale-go-staticcheck|

test/command_callback/test_golint_command_callbacks.vader

@@ -0,0 +1,18 @@
+Before:
+  call ale#assert#SetUpLinterTest('go', 'golint')
+
+After:
+  call ale#assert#TearDownLinterTest()
+
+Execute(The default golint command should be correct):
+  AssertLinter 'golint', ale#Escape('golint') . ' %t'
+
+Execute(The golint executable should be configurable):
+  let b:ale_go_golint_executable = 'foobar'
+
+  AssertLinter 'foobar', ale#Escape('foobar') . ' %t'
+
+Execute(The golint options should be configurable):
+  let b:ale_go_golint_options = '--foo'
+
+  AssertLinter 'golint', ale#Escape('golint') . ' --foo %t'