On Tue, Apr 25, 2006 at 11:00:37PM -0600, Eric Arnold wrote:
> On 4/25/06, Benji Fisher <[EMAIL PROTECTED]> wrote:
> >
> > I think the problem is that \%5l is a zero-width pattern. I do not
> > know whether the docs say this, or if it is supposed to work this way,
> > but perhaps the point is that syntax highlighting applies to
> > characters, and there is no character that matches a zero-width pattern.
> > I tried
>
> I'm fuzzy on what zero-width means. I thought that it meant that it
> allows subseqent regexp sequences to match at the positition of the
> zero-width item, not that it couldn't an arbitrary width string.
I think of it this way: a zero-width pattern matches in between
two characters. For example, /\</ matches between the space and the "b"
in "foo bar".
> > syn clear
> > syn match Visual /\%5l./
>
> Do you mean /\%5l.*/ ?
I am pretty sure that I tried what I typed. My pattern should
match each character individually in the fifth line; yours should match
the whole line at once.
> > and that seems to work. You should be able to tweak this to get a
> > rectangle.
>
> I've gotten the rectangle I need but it took three steps. That's
> fine, but I still don't know syn match and match are
> different. I suppose it could be related to the zero width thing. At
> this point, I will simply stop using match as a way to prototype
> regexps for syn match.
I can do it in one step:
:syn match Search /\%>3l\%<6l\%>2c\%<5c./ containedin=ALL
highlights a little 2x2 square as I edit this e-mail. (I used
containedin=ALL since I did not do a :syn clear first.)
HTH --Benji Fisher
