Fix #491 - Use -x for shellcheck for checking files with sourced files

ale_linters/sh/shellcheck.vim

@@ -43,11 +43,12 @@ function! ale_linters#sh#shellcheck#GetCommand(buffer) abort
     let l:exclude_option = ale#Var(a:buffer, 'sh_shellcheck_exclusions')
     let l:dialect = ale_linters#sh#shellcheck#GetDialectArgument(a:buffer)
 
-    return ale_linters#sh#shellcheck#GetExecutable(a:buffer)
+    return ale#path#BufferCdString(a:buffer)
+    \   . ale#Escape(ale_linters#sh#shellcheck#GetExecutable(a:buffer))
     \   . (!empty(l:dialect) ? ' -s ' . l:dialect : '')
     \   . (!empty(l:options) ? ' ' . l:options : '')
     \   . (!empty(l:exclude_option) ? ' -e ' . l:exclude_option : '')
-    \   . ' -f gcc -'
+    \   . ' -x -f gcc -'
 endfunction
 
 call ale#linter#Define('sh', {

test/command_callback/test_shellcheck_command_callback.vader

@@ -9,6 +9,12 @@ Before:
 
   runtime ale_linters/sh/shellcheck.vim
 
+  call ale#test#SetDirectory('/testplugin/test/command_callback')
+  call ale#test#SetFilename('test.sh')
+
+  let b:prefix = 'cd ' . ale#Escape(ale#path#Winify(g:dir)) . ' && '
+  let b:suffix = ' -x -f gcc -'
+
 After:
   Restore
 
@@ -16,19 +22,22 @@ After:
   unlet! b:ale_sh_shellcheck_executable
   unlet! b:ale_sh_shellcheck_options
   unlet! b:is_bash
+  unlet! b:prefix
+
+  call ale#test#RestoreDirectory()
 
   call ale#linter#Reset()
 
 Execute(The default shellcheck command should be correct):
   AssertEqual
-  \ 'shellcheck -f gcc -',
+  \ b:prefix . ale#Escape('shellcheck') . b:suffix,
   \ ale_linters#sh#shellcheck#GetCommand(bufnr(''))
 
 Execute(The shellcheck command should accept options):
   let b:ale_sh_shellcheck_options = '--foobar'
 
   AssertEqual
-  \ 'shellcheck --foobar -f gcc -',
+  \ b:prefix . ale#Escape('shellcheck') . ' --foobar' . b:suffix,
   \ ale_linters#sh#shellcheck#GetCommand(bufnr(''))
 
 Execute(The shellcheck command should accept options and exclusions):
@@ -36,14 +45,14 @@ Execute(The shellcheck command should accept options and exclusions):
   let b:ale_sh_shellcheck_exclusions = 'foo,bar'
 
   AssertEqual
-  \ 'shellcheck --foobar -e foo,bar -f gcc -',
+  \ b:prefix . ale#Escape('shellcheck') . ' --foobar -e foo,bar' . b:suffix,
   \ ale_linters#sh#shellcheck#GetCommand(bufnr(''))
 
 Execute(The shellcheck command should include the dialect):
   let b:is_bash = 1
 
   AssertEqual
-  \ 'shellcheck -s bash -f gcc -',
+  \ b:prefix . ale#Escape('shellcheck') . ' -s bash' . b:suffix,
   \ ale_linters#sh#shellcheck#GetCommand(bufnr(''))
 
 Execute(The shellcheck command should include the dialect before options and exclusions):
@@ -52,5 +61,8 @@ Execute(The shellcheck command should include the dialect before options and exc
   let b:ale_sh_shellcheck_exclusions = 'foo,bar'
 
   AssertEqual
-  \ 'shellcheck -s bash --foobar -e foo,bar -f gcc -',
+  \ b:prefix
+  \   . ale#Escape('shellcheck')
+  \   . ' -s bash --foobar -e foo,bar'
+  \   . b:suffix,
   \ ale_linters#sh#shellcheck#GetCommand(bufnr(''))