Ben Fritz wrote:
> I use the standard C syntax rules, but I have added a couple of rules
> in my after/syntax/c.vim file to add some additional syntax folding. I
> have narrowed my problem down to the following addition:
>
> " add folding of multiline () groups
> syn region SynFoldParen
> \ start="(" end=")"
> \ skip=+"\%(\\"\|[^"]\)\{-}\\\@<!"\|'[^']\{-}'\|'\\''\|//.*+
> \ transparent fold keepend extend
> \ containedin=ALLBUT,cComment,cCommentL,cString,cCppString
>
> Using this addition, with this code::
>
> void foo()
> {
> printf("look how {braces} break highlighting!\n");
> }
>
> makes the "Constant" highlighting go away after the closing brace
> ('}') in the printf statement.
Where is the 'Constant' highlighting meant to be? I don't get it. Is it
a custom syntax rule too? Or maybe some setting in your vimrc enables
it? Perhaps check your syntax/c.vim is up to date, and send us your
custom file to see if we can reproduce it? Also quote your Vim version,
perhaps, in case it's relevant.
Ben.
> Without the additional fold rule, the highlighting is fine.
>
> I have the following mapping to display the current syntax stack:
>
> nmap <F10>
> \ :echo '<'.synIDattr(synIDtrans(synID(line('.'),col('.'),
> 1)),'name').'> from:' <bar>
> \ let indent = '' <bar>
> \ for syn_id in synstack(line('.'), col('.')) <bar>
> \ echo indent.'<'.synIDattr(syn_id,"name").'>' <bar>
> \ let indent .= ' ' <bar>
> \ endfor <bar>
> \ unlet indent<CR>
>
> Using this command, I get for the syntax stack, between the opening
> double-quote and the closing brace:
>
> <Constant> from:
> <cBlock>
> <SynFoldParen>
> <cParen>
> <cString>
>
> After the closing brace until the end quote, I get:
>
> <> from:
> <cBlock>
> <SynFoldParen>
> <cParen>
> <cString>
>
> Even the \n gets the correct "cSpecial" highlight group:
>
> <> from:
> <cBlock>
> <SynFoldParen>
> <cParen>
> <cString>
> <cSpecial>
>
> Everything seems correct in these last two syntax stacks, except that
> highlight group that is linked to the final item in the syntax stack
> does not get applied. I'm completely baffled as to why.
>
> I thought at first that maybe the cBlock group from the function body
> was ending prematurely, but this is not the case, as I can see from
> the fold column (since cBlock is folded).
>
> Syntax stacks for the places above using just the standard rules are
> identical, except for the fact that SynFoldParen is missing, and the
> correct linked highlight group is applied.
> >
>
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