Re: Folding on markdown headers

On Fri, May 25, 2012 at 06:35:28PM EDT, Eric Weir wrote:
>
> On May 25, 2012, at 3:08 PM, Chris Jones wrote:

[..]

> Thanks, Chris. It depends on the filetype. If it's markdown the result
> is "foldmethod=expr." Otherwise "foldmethod=manual."

So it looks like the markdown script gets loaded when dealing with
a markdown file. I should have asked you to issue a ':verbose set fdm'.

> > The script sets the fdm option to 'expr' for the current buffer/window,
> > which amounts to running user-written code for each line in the buffer.
> >
> > In this particular case, the user-written code is a function named
> > 'Foldexpr_markdown()'. By the look of it, this function should create
> > a fold automatically wherever it sees a line that starts with an equal
> > sign in column one, followed by either an equal sign or white space.
> > A valid markdown header would be something such as '= a header'.. or
> > '=== another header'... etc.
> >
> > So that if you if you add a line of the form: '= this is a header' and
> > hit <Enter>, the script should run automatically and create a fold
> > immediately. At least that's the way I understand it.

> There are two types of markdown headers, Setext and atx. Setext uses
> equal sign or single underline underlining. atx uses hashmarks, #, ##,
> etc. I use the latter and the script folds on them fine.

OK. I wrongly assumed the hash marks introduced comments. Doesn't make
any difference, though. I have a feeling that the problem is that the
folding script is not executed when you create markdown files, only when
you read them.

> >> Maybe this is something Vlad overlooked? Whatever, the workaround
> >> is pretty simple, so thanks again for that.

Looks more like something is missing. I don't see markdown in the global
file type detection file (filetype.vim) but I'm running Vim 7.2. Now the
script only does folding. Did you download a syntax highlighting file
from somewhere else? Do you have any other 'markdown.vim' files on your
system? Seems there are 2-3 different syntax files lying around in
different repos (vim.org, github..).

[..]

> > What exactly do you mean by 'when I create a file'..? How does it 'not
> > work'?

> I start with an empty window, i.e., no file loaded. I type in a "#"
> and some text, do a <CR> and some more text, another <CR> and some
> more text, then write/save the file as a markdown file, i.e., with
> markdown extent. At that point the header is not highlighted and
> folding does not work. If I close the file and reopen it, highlighting
> and folding work.

I _believe_ this is usually done via autocommands. See my other post.

CJ

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