Add option g:indent_guides_exclude_filetypes.

For specifying a list of filetypes to disable the plugin for.

Closes #20 and #26.

autoload/indent_guides.vim

@@ -33,6 +33,11 @@ endfunction
 function! indent_guides#enable()
   let g:indent_guides_autocmds_enabled = 1
 
+  if indent_guides#exclude_filetype()
+    call indent_guides#clear_matches()
+    return
+  end
+
   call indent_guides#init_script_vars()
   call indent_guides#highlight_colors()
   call indent_guides#clear_matches()
@@ -261,3 +266,15 @@ function! indent_guides#indent_highlight_pattern(indent_pattern, column_start, i
   let l:pattern .= '\ze'
   return l:pattern
 endfunction
+
+"
+" Detect if any of the buffer filetypes should be excluded.
+"
+function! indent_guides#exclude_filetype()
+  for ft in split(&ft, ',')
+    if index(g:indent_guides_exclude_filetypes, ft) > -1
+      return 1
+    end
+  endfor
+  return 0
+endfunction

doc/indent_guides.txt

@@ -150,6 +150,15 @@ Default: 0. Values: 0 or 1.
   let g:indent_guides_enable_on_vim_startup = 0
 <
 
+------------------------------------------------------------------------------
+                                             *'indent_guides_exclude_filetypes'*
+Use this option to specify a list of filetypes to disable the plugin for.
+
+Default: ['help']. Values: list of strings.
+>
+  let g:indent_guides_exclude_filetypes = ['help', 'nerdtree']
+<
+
 ==============================================================================
 4. MAPPINGS                                             *indent-guides-mappings*
 
@@ -228,6 +237,8 @@ Bug reports, feedback, suggestions etc are welcomed.
 
 1.7 (pending release)~
   * Added way to override the default mapping (thanks xuhdev).
+  * Added option g:|indent_guides_exclude_filetypes| to specify a list of
+    filetypes to disable the plugin for.
 
 1.6~
   * Added option g:|indent_guides_space_guides| to control whether spaces are

plugin/indent_guides.vim

@@ -54,6 +54,10 @@ call s:InitVariable('g:indent_guides_enable_on_vim_startup', 0 )
 call s:InitVariable('g:indent_guides_debug',                 0 )
 call s:InitVariable('g:indent_guides_space_guides',          1 )
 
+if !exists('g:indent_guides_exclude_filetypes')
+  let g:indent_guides_exclude_filetypes = ['help']
+endif
+
 " Default mapping
 if !hasmapto('<Plug>IndentGuidesToggle', 'n') && maparg('<Leader>ig', 'n') == ''
   nmap <silent><unique> <Leader>ig <Plug>IndentGuidesToggle
@@ -72,7 +76,7 @@ augroup indent_guides
     autocmd VimEnter * :IndentGuidesEnable
   endif
 
-  autocmd BufEnter,WinEnter * call indent_guides#process_autocmds()
+  autocmd BufEnter,WinEnter,FileType * call indent_guides#process_autocmds()
 
   " Trigger BufEnter and process modelines.
   autocmd ColorScheme * doautocmd indent_guides BufEnter