Re: Highlight group exists but no highlighting

Thanks Ben, let me try what are suggesting. But I still dont think
that it should be a autocmd to do this.

On Sun, May 1, 2011 at 7:04 PM, Ben Schmidt
<mail_ben_schmidt@yahoo.com.au> wrote:
>> syntax keyword UserKeywords Samkit CHECKME REVIEW CHECKME
>> containedin=ALL
>> highlight def link UserKeywords Todo
>
> You probably don't want the 'def' in there, but it probably doesn't
> really matter.
>
>> This works fine if I open an unnamed file like just "gvim".
>
> Syntax is buffer-specific, so as soon as you edit any other file of any
> other type, it will no longer be in effect.
>
>> I am suspecting that something is calling "highlight clear" but I am
>> not sure of this.
>
> That won't be happening. You can confirm this, though, by typing
>
>   :verbose highlight
>
> It will show the highlight group (even with 'cleared' beside it, if it
> has been cleared), and in the line below, the file that last set it (or
> cleared it).
>
> Likewise
>
>   :verbose syntax
>
> will let you know where syntax groups originated, though this is often a
> little less useful (cleared groups are not shown, I don't think).
>
>> Additionally after opening 1.c I checked if my syntax group exists and
>> it exists so it can only be the work of "highlight clear".
>
> This can't really be possible (that the syntax group exists). Probably
> the highlight group for your syntax item exists, but the actual syntax
> rule will not. I.e. you will see it listed in :highlight but not in
> :syntax.
>
>> :hi UserKeywords
>> UserKeywords   xxx links to Todo
>
> This is as expected.
>
> If you do :syn UserKeywords, though, you will not see it.
>
>> For this much highlighting I would not like to create a new
>> runtimepath/after/syntax/default.vim containing above syntax+highlight
>> group commands and then source it for every BufRead and FileRead.
>
> You can use an autocommand to just run the syntax you want on those
> events. Put something like this in .vimrc:
>
> autocmd BufNewFile,BufRead * syntax keyword UserKeywords
>        \ Samkit CHECKME REVIEW CHECKME containedin=ALL
>
> Adjust the * if you want to apply to specific filetypes, and ensure it
> is after the filetype on and/or syntax on commands in your vimrc or the
> autocommanes may run before those related to syntax and thus the former
> may have the syntax cleared by the latter.
>
> You probably don't need to do the highlight command similarly; just
> having it in your .vimrc as you currently do is probably enough. But if
> you need to include it, or a little more highlighting, in an
> autocommand, a small function in your .vimrc which you call with an
> autocommand becomes an attractive option.
>
> Hope this helps, and gives enough debugging tips, too.
>
> Cheers,
>
> Ben.
>
>
>
>

--
- Samkit

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