#427 Implement buffer variable overrides for all linter options

ale_linters/cpp/clang.vim

@@ -11,7 +11,7 @@ function! ale_linters#cpp#clang#GetCommand(buffer) abort
     "  headers in the same directory.
     return 'clang++ -S -x c++ -fsyntax-only '
     \   . '-iquote ' . fnameescape(fnamemodify(bufname(a:buffer), ':p:h'))
-    \   . ' ' . g:ale_cpp_clang_options . ' -'
+    \   . ' ' . ale#Var(a:buffer, 'cpp_clang_options') . ' -'
 endfunction
 
 call ale#linter#Define('cpp', {

ale_linters/cpp/clangtidy.vim

@@ -6,7 +6,7 @@ let g:ale_cpp_clangtidy_options =
 \   get(g:, 'ale_cpp_clangtidy_options', '-std=c++14 -Wall')
 
 function! ale_linters#cpp#clangtidy#GetCommand(buffer) abort
-    return 'clang-tidy %t -- ' . g:ale_cpp_clangtidy_options
+    return 'clang-tidy %t -- ' . ale#Var(a:buffer, 'cpp_clangtidy_options')
 endfunction
 
 call ale#linter#Define('cpp', {

ale_linters/cpp/cppcheck.vim

@@ -4,12 +4,16 @@
 " Set this option to change the cppcheck options
 let g:ale_cpp_cppcheck_options = get(g:, 'ale_cpp_cppcheck_options', '--enable=style')
 
+function! ale_linters#cpp#cppcheck#GetCommand(buffer) abort
+    return 'cppcheck -q --language=c++ '
+    \   . ale#Var(a:buffer, 'cpp_cppcheck_options')
+    \   . ' %t'
+endfunction
+
 call ale#linter#Define('cpp', {
 \   'name': 'cppcheck',
 \   'output_stream': 'both',
 \   'executable': 'cppcheck',
-\   'command': 'cppcheck -q --language=c++ '
-\       . g:ale_cpp_cppcheck_options
-\       . ' %t',
+\   'command_callback': 'ale_linters#cpp#cppcheck#GetCommand',
 \   'callback': 'ale#handlers#HandleCppCheckFormat',
 \})

ale_linters/cpp/gcc.vim

@@ -20,7 +20,7 @@ function! ale_linters#cpp#gcc#GetCommand(buffer) abort
     "  headers in the same directory.
     return 'gcc -S -x c++ -fsyntax-only '
     \   . '-iquote ' . fnameescape(fnamemodify(bufname(a:buffer), ':p:h'))
-    \   . ' ' . g:ale_cpp_gcc_options . ' -'
+    \   . ' ' . ale#Var(a:buffer, 'cpp_gcc_options') . ' -'
 endfunction
 
 call ale#linter#Define('cpp', {