--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vim/autoload/ctrlpext/autoignore.vim	Wed Jul 23 16:57:59 2014 -0700
@@ -0,0 +1,106 @@
+" =============================================================================
+" File:          autoload/ctrlpext/autoignore.vim
+" Description:   Auto-ignore Extension
+" Author:        Ludovic Chabant <github.com/ludovicchabant>
+" =============================================================================
+
+
+" Global Settings {{{
+
+if !exists('g:ctrlp_autoignore_debug')
+    let g:ctrlp_autoignore_debug = 0
+endif
+
+if !exists('g:ctrlp_autoignore_trace')
+    let g:ctrlp_autoignore_trace = 0
+endif
+
+if exists('g:ctrlp_autoignore_loaded') && g:ctrlp_autoignore_loaded
+            \ && !g:ctrlp_autoignore_debug
+    finish
+endif
+let g:ctrlp_autoignore_loaded = 1
+
+" }}}
+
+" Autoload functions {{{
+
+" Call this in your `vimrc` to enable auto-ignore.
+function! ctrlpext#autoignore#init() abort
+    if !exists('g:ctrlp_custom_ignore')
+        let g:ctrlp_custom_ignore = {}
+    endif
+    let g:ctrlp_custom_ignore['func'] = 'ctrlpext#autoignore#ignore'
+endfunction
+
+" List patterns for a given project's root.
+function! ctrlpext#autoignore#get_patterns(root_dir) abort
+    let l:patterns = s:get_project_patterns(a:root_dir)
+    for pat in l:patterns
+        let l:prefix = pat['type'] == '' ? '(all)' : pat['type']
+        echom l:prefix . ':' . pat['pat']
+    endfor
+endfunction
+
+" }}}
+
+" Internals {{{
+
+function! s:trace(message) abort
+    if g:ctrlp_autoignore_trace
+        echom "ctrlp_autoignore: " . a:message
+    endif
+endfunction
+
+let s:proj_cache = {}
+
+function! s:load_project_patterns(root_dir) abort
+    let l:ign_path = a:root_dir . '/.ctrlpignore'
+    if !filereadable(l:ign_path)
+        call s:trace("No pattern file at: " . l:ign_path)
+        return []
+    endif
+    let l:patterns = []
+    let l:lines = readfile(l:ign_path)
+    for line in l:lines
+        if match(line, '\v^\s*$') >= 0 || match(line, '\v^\s*#') >= 0
+            continue
+        endif
+        let l:matches = matchlist(line, '\v^((dir|file|link)\:)?(.*)')
+        let l:mtype = l:matches[2]
+        let l:mpat = l:matches[3]
+        call add(l:patterns, {'type': l:mtype, 'pat': l:mpat})
+    endfor
+    call s:trace("Loaded " . len(l:patterns) . " patterns from: " . l:ign_path)
+    return l:patterns
+endfunction
+
+function! s:get_project_patterns(root_dir) abort
+    let l:patterns = get(s:proj_cache, a:root_dir)
+    if type(l:patterns) == type([])
+        return l:patterns
+    endif
+
+    call s:trace("Loading patterns for project: " . a:root_dir)
+    let l:loaded = s:load_project_patterns(a:root_dir)
+    let s:proj_cache[a:root_dir] = l:loaded
+    return l:loaded
+endfunction
+
+" The custom ignore function that CtrlP will be using in addition to
+" normal pattern-based matching.
+function! ctrlpext#autoignore#ignore(item, type) abort
+    let l:root = getcwd()
+    let l:patterns = s:get_project_patterns(l:root)
+    for pat in l:patterns
+        if pat['type'] == '' || pat['type'] == a:type
+            if match(a:item, pat['pat']) >= 0
+                return 1
+            endif
+        endif
+    endfor
+    return 0
+endfunction
+
+" }}}
+