Re: vim expression to fold latex documents

On Mon, February 20, 2012 16:49, Antonio Recio wrote:
> When I open latex files I would like to be able to fold with one vim
> expression on the top of the file from \htitle to \clearpage.
>
> I have a lot of blocks like this:
> \htitle{Latex Title}
> bla bla bla
> bla bla bla
> \clearpage
>
> And I would like to get this
> + Latex Title
>
Really, this is only very little tested, but seems to work so far:

fu! FoldTeXLines(lnum)
if !exists("s:fold")
let s:fold = 0
endif
let line = getline(a:lnum)
if line =~ '^\s*\\htitle'
let s:fold = 1
return s:fold
elseif line =~ '^\s*\\clearpage'
let s:fold = 0
return 1
endif
return s:fold
endfu

fu! FoldText(line)
return '+ '. matchstr(getline(a:line),'^\s*\\htitle{\zs.*\ze}')
endfu

setl fdm=expr fde=FoldTeXLines(v:lnum) fdt=FoldText(v:foldstart)

regards,
Christian

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