[TxMt] multi-line language pattern in bundle
Matthew Anderson
manders2k.lists at gmail.com
Sat Jun 17 15:44:18 UTC 2006
I've been wanting to try my hand at bundle writing for a few weeks,
and this morning I began tinkering with what could possibly grow into
a reStructuredText bundle.
The first thing I attempted to figure out was how to recognize the
section titles in reStructuredText. From the language specification
(http://docutils.sourceforge.net/docs/ref/rst/restructuredtext.htm):
Sections are identified through their titles, which are marked
up with adornment: "underlines" below the title text, or
underlines and matching "overlines" above the title. An
underline/overline is a single repeated punctuation character
that begins in column 1 and forms a line extending at least as
far as the right edge of the title text.
For example:
A Title
-------
=============
Another Title
=============
Not a title
-----
==================================
Don't think this is a title either
==================================
It isn't clear to me how to capture these patterns with the language
grammar match rules, or indeed if it is even possible with the
current TextMate toolset. It doesn't seem like 'match' can work for
a multi-line pattern such as any of the above, and I haven't figured
out how one can use 'begin/end' to match a 2 or 3 line rule
(underline or overline/underline) but exclude things which don't match.
Is it possible? I freely admit that it's been quite a few years
since I've taken a compilers class (or tried to do a language-parsing
type thing), so I apologize if I'm missing something obvious.
The Markdown language (which I've never personally used) has a
similar underline mechanism for specifying headings, but it looks
like the Markdown TextMate bundle heading rule only captures the
underline and not the heading text. For example, a Markdown heading
and scopes:
A heading <= meta.paragraph.markdown, text.html.markdown
========= <= markup.heading.1.markdown, text.html.markdown
Thanks for any insight!
--
Matt Anderson
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