Re: bug#19714: reftex under Xemacs 21.5.33 Mule
David Kastrup <dak(a)gnu.org> writes:
> Yes, that's it. Unfortunately, I use that on purpose in
> `reftex-label-regexps' which is a customizable list of regexps which
> gets `regexp-opt'ed and starts `reftex-everything-regexp'. By
> default, it has one entry matching \label{...} and one matching
> keyval label={...} arguments.
>
> RefTeX relies on the first group in `reftex-everything-regexp'
> capturing the label name (see reftex-parse.el:242). Without the
> explicitly numbered groups, the regex for \label{...} would be group
> 1, but the regex for label={...} would already be two.
>
> I don't see an easy fix here on my side.
The first non-nil matching group?
Well, reftex also relies on group 3 being the section, group 7 being a
file being input or included, group 9 being the appendix, etc. So when
the label becomes the first non-nil group, the section becomes the third
non-nil group after the first non-nil group...
Oh, and of course you may have a document without a \label. Then the
first non-nil group is the section rather than the label.
Bye,
Tassilo
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