Toggle NERDCommenter to Alternative Value Based on File Type

Question

I'd like to configure NERDCommenter in vim to use the alternative comment styles for certain file types. What is the correct way to do this. I can't figure out how to call into the plugin code from the autocmd. What I'm trying to do is something like this:

autocmd FileType dosbatch :call NERDCommenterAltDelims

The above fails to work, but I found out I can get the function name with the command:

map <Plug>NERDCommenterAltDelims

that returns:

:call <SNR>17_SwitchToAlternativeDelimiters(1)<CR>

Is there some way to use the map command to execute the value of the map?

score 1 · Answer 1 · answered Sep 22 '12 at 08:12

1

Since there is only the script-local function, you have to invoke the provided <Plug> mapping via :normal:

:autocmd FileType dosbatch execute "normal \<Plug>NERDCommenterAltDelims"

To suppress the Now using ... to delimit comments message, use silent execute instead.

answered Sep 22 '12 at 08:12

Ingo Karkat

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Great answer since it calls the function in question. The only problem, is that when the autocmd executes, I don't think the plugin has loaded yet. Is there anyway to chain this with VimEnter? – cmcginty Sep 24 '12 at 19:35
Huh? The `FileType` event is fired whenever a batch file is detected. The inital load of plugins happened before that (and before `VimEnter` on startup. Anyway, I would prefer my other solution because it only needs to run once. – Ingo Karkat Sep 25 '12 at 06:38

score 1 · Accepted Answer · answered Sep 22 '12 at 08:24

Alternatively, why don't you just switch the default and alt definitions for the dosbatch filetype, as NERDCommenter offers this extension point. Put the following into your ~/.vimrc; it must be executed before plugin/NERDCommenter.vim.

let g:NERDCustomDelimiters = {'dosbatch': { 'left': '::', 'leftAlt': 'REM ' }}

score 0 · Answer 3 · answered Sep 24 '12 at 20:11

0

Building off of @ingo-karkat answer:

autocmd FileType dosbatch autocmd VimEnter * execute "normal \<Plug>NERDCommenterAltDelims"

My vimscript skills are non-existant, so there might be a cleaner way to do this. Feel free to improve upon it.

answered Sep 24 '12 at 20:11

cmcginty

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score 0 · Answer 4 · answered Jan 23 '14 at 08:29

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It seems that there is now a new better way to use the functionality of NERDCommenter in our own mappings:

call NERDComment('n', 'altDelims')

See:

:h NERDComNERDComment

answered Jan 23 '14 at 08:29

Ciro Santilli OurBigBook.com

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Toggle NERDCommenter to Alternative Value Based on File Type

4 Answers4