I want to open the taglist window only specifically for the C files
If I put the following command in my .vimrc then the window opens for all the files
let Tlist_Auto_Open=1
However, when I used autocmd based on filetype, it does not open. Is there any kind of dependency that I need to check for ?
autocmd FileType c,cpp,h,py let Tlist_Auto_Open=1
A part of my .vimrc looks like below -
" Install pathogen
execute pathogen#infect()
set number " Display Line Numbers
set autoindent " Auto-indenting
set showmatch " Highlight Matching brackets
set tabstop=4 " Default tabstop value
set shiftwidth=4
set smarttab " Enable smart tab
set hlsearch " highlight searched items
set ignorecase " ignore case when searching
set smartcase " ignore case if search pattern is all lowercase, case-sensitive otherwise
" set scrolloff=999 "Start scrolling when we're 8 lines away from margins
" No annoying sound on errors
set noerrorbells
set novisualbell
set timeoutlen=500
filetype plugin on
filetype plugin indent on
set ic
autocmd filetype python set expandtab
" Remove the trailing white-spaces in the C-file
autocmd FileType c,cpp,h,py autocmd BufWritePre <buffer> %s/\s\+$//e
" Unmap the tab-key in the taglist window.
:autocmd BufEnter __Tag_List__ silent! nunmap <buffer> <Tab>
" Syntax higlight for Groovy
au BufRead,BufNewFile *.atc set filetype=groovy
""""""""""""""""""""""""""""""""""
" Taglist configuration
""""""""""""""""""""""""""""""""""
"
" To automatically close the tags tree for inactive files.
" let Tlist_File_Fold_Auto_Close = 1
" Display only one file in taglist.
let Tlist_Show_One_File = 1
" Taglist window size
let Tlist_WinWidth = 30
" Open Taglist by default
autocmd FileType c,cpp,h,py let Tlist_Auto_Open=1
" Close VIM when only taglist window is open
let Tlist_Exit_OnlyWindow = 1
This is a timing problem. The taglist plugin evaluates the Tlist_Auto_Open configuration during its load. At that point in time, your ~/.vimrc has been read, but no file has yet been opened. Your :autocmd only activates after such file has been :edited, and by then, the taglist initialization is over. Also, until you only edit one [type of] file in a Vim session, your approach would have resulted in all subsequent files opening the taglist!
So, you cannot use the taglist-provided config feature, but fortunately it is very easy to implement an automatic triggering of the plugin via the :TlistOpen command. Just modify your autocmd to this:
:autocmd FileType c,cpp,h.py TlistOpen