From 2a88b60ff1ef5a4e9e73dc0d3be9f8ac51ec1309 Mon Sep 17 00:00:00 2001
From: w0rp <devw0rp@gmail.com>
Date: Wed, 29 Mar 2017 00:56:39 +0100
Subject: [PATCH] Fix #260 automatically set .csslintrc files from ancestor
 directories

---
 ale_linters/css/csslint.vim                   | 11 +++++-
 .../csslint-test-files/other-app/testfile.css |  0
 test/csslint-test-files/some-app/.csslintrc   |  0
 .../some-app/subdir/testfile.css              |  0
 test/test_csslint_config_detection.vader      | 36 +++++++++++++++++++
 5 files changed, 46 insertions(+), 1 deletion(-)
 create mode 100644 test/csslint-test-files/other-app/testfile.css
 create mode 100644 test/csslint-test-files/some-app/.csslintrc
 create mode 100644 test/csslint-test-files/some-app/subdir/testfile.css
 create mode 100644 test/test_csslint_config_detection.vader

diff --git a/ale_linters/css/csslint.vim b/ale_linters/css/csslint.vim
index 39176ce3..6b0956ee 100644
--- a/ale_linters/css/csslint.vim
+++ b/ale_linters/css/csslint.vim
@@ -1,9 +1,18 @@
 " Author: w0rp <devw0rp@gmail.com>
 " Description: This file adds support for checking CSS code with csslint.
 
+function! ale_linters#css#csslint#GetCommand(buffer) abort
+    let l:csslintrc = ale#util#FindNearestFile(a:buffer, '.csslintrc')
+    let l:config_option = !empty(l:csslintrc)
+    \   ? '--config=' . fnameescape(l:csslintrc)
+    \   : ''
+
+    return 'csslint --format=compact ' . l:config_option . ' %t'
+endfunction
+
 call ale#linter#Define('css', {
 \   'name': 'csslint',
 \   'executable': 'csslint',
-\   'command': 'csslint --format=compact %t',
+\   'command_callback': 'ale_linters#css#csslint#GetCommand',
 \   'callback': 'ale#handlers#HandleCSSLintFormat',
 \})
diff --git a/test/csslint-test-files/other-app/testfile.css b/test/csslint-test-files/other-app/testfile.css
new file mode 100644
index 00000000..e69de29b
diff --git a/test/csslint-test-files/some-app/.csslintrc b/test/csslint-test-files/some-app/.csslintrc
new file mode 100644
index 00000000..e69de29b
diff --git a/test/csslint-test-files/some-app/subdir/testfile.css b/test/csslint-test-files/some-app/subdir/testfile.css
new file mode 100644
index 00000000..e69de29b
diff --git a/test/test_csslint_config_detection.vader b/test/test_csslint_config_detection.vader
new file mode 100644
index 00000000..a06258ca
--- /dev/null
+++ b/test/test_csslint_config_detection.vader
@@ -0,0 +1,36 @@
+Before:
+  silent! cd /testplugin/test
+  let g:dir = getcwd()
+
+  runtime ale_linters/css/csslint.vim
+
+After:
+  silent execute 'cd ' . g:dir
+  unlet! g:dir
+
+  call ale#linter#Reset()
+
+Execute(--config should be set when the .csslintrc file is found):
+  new csslint-test-files/some-app/subdir/testfile.js
+
+  AssertEqual
+  \ (
+  \   'csslint --format=compact '
+  \   . '--config=' . fnameescape(g:dir . '/csslint-test-files/some-app/.csslintrc')
+  \   . ' %t'
+  \ ),
+  \ ale_linters#css#csslint#GetCommand(bufnr(''))
+
+  :q
+
+Execute(--config should not be used when no .csslintrc file exists):
+  new csslint-test-files/other-app/testfile.css
+
+  AssertEqual
+  \ (
+  \   'csslint --format=compact '
+  \   . ' %t'
+  \ ),
+  \ ale_linters#css#csslint#GetCommand(bufnr(''))
+
+  :q