#2919 Use compile_commands.json for headers

autoload/ale/c.vim

@@ -9,13 +9,6 @@ let s:sep = has('win32') ? '\' : '/'
 let g:__ale_c_project_filenames = ['.git/HEAD', 'configure', 'Makefile', 'CMakeLists.txt']
 
 function! ale#c#GetBuildDirectory(buffer) abort
-    " Don't include build directory for header files, as compile_commands.json
-    " files don't consider headers to be translation units, and provide no
-    " commands for compiling header files.
-    if expand('#' . a:buffer) =~# '\v\.(h|hpp)$'
-        return ''
-    endif
-
     let l:build_dir = ale#Var(a:buffer, 'c_build_dir')
 
     " c_build_dir has the priority if defined

test/command_callback/test_c_clang_tidy_command_callback.vader

@@ -57,7 +57,7 @@ Execute(The build directory setting should override the options):
   \   . ' -checks=' . ale#Escape('*') . ' %s'
   \   . ' -p ' . ale#Escape('/foo/bar')
 
-Execute(The build directory should be ignored for header files):
+Execute(The build directory should be used for header files):
   call ale#test#SetFilename('test.h')
 
   let b:ale_c_clangtidy_checks = ['*']
@@ -66,12 +66,8 @@ Execute(The build directory should be ignored for header files):
 
   AssertLinter 'clang-tidy',
   \ ale#Escape('clang-tidy')
-  \   . ' -checks=' . ale#Escape('*') . ' %s -- -Wall'
-
-  call ale#test#SetFilename('test.h')
-
-  AssertLinter 'clang-tidy',
-  \ ale#Escape('clang-tidy') . ' -checks=' . ale#Escape('*') . ' %s -- -Wall'
+  \   . ' -checks=' . ale#Escape('*') . ' %s'
+  \   . ' -p ' . ale#Escape('/foo/bar')
 
 Execute(The executable should be configurable):
   let b:ale_c_clangtidy_checks = ['*']

test/command_callback/test_clang_tidy_command_callback.vader

@@ -57,7 +57,7 @@ Execute(The build directory setting should override the options):
   \   . ' -checks=' . ale#Escape('*') . ' %s'
   \   . ' -p ' . ale#Escape('/foo/bar')
 
-Execute(The build directory should be ignored for header files):
+Execute(The build directory should be used for header files):
   call ale#test#SetFilename('test.h')
 
   let b:ale_cpp_clangtidy_checks = ['*']
@@ -66,12 +66,15 @@ Execute(The build directory should be ignored for header files):
 
   AssertLinter 'clang-tidy',
   \ ale#Escape('clang-tidy')
-  \   . ' -checks=' . ale#Escape('*') . ' %s -- -Wall'
+  \   . ' -checks=' . ale#Escape('*') . ' %s'
+  \   . ' -p ' . ale#Escape('/foo/bar')
 
   call ale#test#SetFilename('test.hpp')
 
   AssertLinter 'clang-tidy',
-  \ ale#Escape('clang-tidy') . ' -checks=' . ale#Escape('*') . ' %s -- -Wall'
+  \ ale#Escape('clang-tidy')
+  \   . ' -checks=' . ale#Escape('*') . ' %s'
+  \   . ' -p ' . ale#Escape('/foo/bar')
 
 Execute(The executable should be configurable):
   let b:ale_cpp_clangtidy_checks = ['*']

test/command_callback/test_cpp_clazy_command_callback.vader

@@ -34,18 +34,20 @@ Execute(The build directory should be configurable):
   \ ale#Escape('clazy-standalone')
   \   . ' -checks=' . ale#Escape('level1') . ' -p ' . ale#Escape('/foo/bar') . ' %s'
 
-Execute(The build directory should be ignored for header files):
+Execute(The build directory should be used for header files):
   call ale#test#SetFilename('test.h')
 
   let b:ale_c_build_dir = '/foo/bar'
 
   AssertLinter 'clazy-standalone',
-  \ ale#Escape('clazy-standalone') . ' -checks=' . ale#Escape('level1') . ' %s'
+  \ ale#Escape('clazy-standalone')
+  \   . ' -checks=' . ale#Escape('level1') . ' -p ' . ale#Escape('/foo/bar') . ' %s'
 
   call ale#test#SetFilename('test.hpp')
 
   AssertLinter 'clazy-standalone',
-  \ ale#Escape('clazy-standalone') . ' -checks=' . ale#Escape('level1') . ' %s'
+  \ ale#Escape('clazy-standalone')
+  \   . ' -checks=' . ale#Escape('level1') . ' -p ' . ale#Escape('/foo/bar') . ' %s'
 
 Execute(The executable should be configurable):
   let b:ale_cpp_clazy_executable = 'foobar'