Use syntastic instead of pyflakes (supports a ton of more languages)

sources_non_forked/syntastic/syntax_checkers/less/less-lint.coffee

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+#!/usr/bin/env node
+
+fs = require 'fs'
+less = require 'less'
+args = process.argv.slice(1)
+options = {}
+
+args = args.filter (arg) ->
+    match = arg.match(/^-I(.+)$/)
+    if match
+        options.paths.push(match[1]);
+        return false
+
+    match = arg.match(/^--?([a-z][\-0-9a-z]*)(?:=([^\s]+))?$/i)
+    if match
+        arg = match[1]
+    else
+        return arg
+
+    switch arg
+        when 'strict-imports' then options.strictImports = true
+        when 'include-path'
+            options.paths = match[2].split(if os.type().match(/Windows/) then ';' else ':')
+                .map (p) ->
+                    if p
+                        return path.resolve(process.cwd(), p)
+        when 'O0' then options.optimization = 0
+        when 'O1' then options.optimization = 1
+        when 'O2' then options.optimization = 2
+
+options.filename = args[1]
+
+parser = new(less.Parser) options
+
+fs.readFile(options.filename, 'utf-8', (err,data) ->
+    parser.parse(data, (err, tree) ->
+        if err
+            less.writeError err
+            process.exit(1)
+    )
+)

sources_non_forked/syntastic/syntax_checkers/less/less-lint.js

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+// Generated by CoffeeScript 1.3.3
+(function() {
+  var args, fs, less, options, parser;
+
+  fs = require('fs');
+
+  less = require('less');
+
+  args = process.argv.slice(1);
+
+  options = {};
+
+  args = args.filter(function(arg) {
+    var match;
+    match = arg.match(/^-I(.+)$/);
+    if (match) {
+      options.paths.push(match[1]);
+      return false;
+    }
+    match = arg.match(/^--?([a-z][\-0-9a-z]*)(?:=([^\s]+))?$/i);
+    if (match) {
+      arg = match[1];
+    } else {
+      return arg;
+    }
+    switch (arg) {
+      case 'strict-imports':
+        return options.strictImports = true;
+      case 'include-path':
+        return options.paths = match[2].split(os.type().match(/Windows/) ? ';' : ':').map(function(p) {
+          if (p) {
+            return path.resolve(process.cwd(), p);
+          }
+        });
+      case 'O0':
+        return options.optimization = 0;
+      case 'O1':
+        return options.optimization = 1;
+      case 'O2':
+        return options.optimization = 2;
+    }
+  });
+
+  options.filename = args[1];
+
+  parser = new less.Parser(options);
+
+  fs.readFile(options.filename, 'utf-8', function(err, data) {
+    return parser.parse(data, function(err, tree) {
+      if (err) {
+        less.writeError(err);
+        return process.exit(1);
+      }
+    });
+  });
+
+}).call(this);

sources_non_forked/syntastic/syntax_checkers/less/lessc.vim

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+"============================================================================
+"File:        less.vim
+"Description: Syntax checking plugin for syntastic.vim
+"Maintainer:  Julien Blanchard <julien at sideburns dot eu>
+"License:     This program is free software. It comes without any warranty,
+"             to the extent permitted by applicable law. You can redistribute
+"             it and/or modify it under the terms of the Do What The Fuck You
+"             Want To Public License, Version 2, as published by Sam Hocevar.
+"             See http://sam.zoy.org/wtfpl/COPYING for more details.
+"
+"============================================================================
+
+" To send additional options to less use the variable g:syntastic_less_options.
+" The default is
+"   let g:syntastic_less_options = "--no-color"
+"
+" To use less-lint instead of less set the variable
+" g:syntastic_less_use_less_lint.
+
+if exists("g:loaded_syntastic_less_lessc_checker")
+    finish
+endif
+let g:loaded_syntastic_less_lessc_checker = 1
+
+if !exists("g:syntastic_less_options")
+    let g:syntastic_less_options = ""
+endif
+
+if !exists("g:syntastic_less_use_less_lint")
+    let g:syntastic_less_use_less_lint = 0
+endif
+
+let s:save_cpo = &cpo
+set cpo&vim
+
+if g:syntastic_less_use_less_lint
+    let s:check_file = 'node ' . syntastic#util#shescape(expand('<sfile>:p:h') . syntastic#util#Slash() . 'less-lint.js')
+else
+    let s:check_file = 'lessc'
+endif
+
+function! SyntaxCheckers_less_lessc_IsAvailable() dict
+    return g:syntastic_less_use_less_lint ? executable('node') : executable('lessc')
+endfunction
+
+function! SyntaxCheckers_less_lessc_GetLocList() dict
+    let makeprg = self.makeprgBuild({
+        \ 'exe': s:check_file,
+        \ 'args': g:syntastic_less_options,
+        \ 'args_after': '--no-color',
+        \ 'tail': '> ' . syntastic#util#DevNull() })
+
+    let errorformat =
+        \ '%m in %f on line %l\, column %c:,' .
+        \ '%m in %f:%l:%c,' .
+        \ '%-G%.%#'
+
+    return SyntasticMake({
+        \ 'makeprg': makeprg,
+        \ 'errorformat': errorformat,
+        \ 'defaults': {'bufnr': bufnr(""), 'text': "Syntax error"} })
+endfunction
+
+call g:SyntasticRegistry.CreateAndRegisterChecker({
+    \ 'filetype': 'less',
+    \ 'name': 'lessc'})
+
+let &cpo = s:save_cpo
+unlet s:save_cpo
+
+" vim: set et sts=4 sw=4: