[AUCTeX] RefTeX: defining new label environment

[Joost Kremers]

Hi all,

I use a TeX package called ExPex for linguistic examples, which has its own way 
of defining labels. The package defines two environments, \ex--\xe and 
\pex--\xe (yes, they're both closed with \xe). The latter allows sublists, 
where each item is introduced with the macro \a.

These environments can define labels with angle brackets:

\ex<ex:1> This is an example
\xe

\pex<ex:2>
\a This is a subexample
\a<b> This is another subexample
\xe

Is there a way to get RefTeX to recognize these things as labels? I've tried adding a 
definition to reftex-label-alist and specifying `\ex<*>' for the ENV-OR-MACRO 
entry, but that doesn't work...

TIA

Joost


PS: there is a discrepancy between the doc string for reftex-label-alist and the info 
section "Non-Standard Environments". The former says that if ENV-OR-MACRO is a 
function, it must return a cons cell (FUNCTION . POSITION), the latter says that it must 
return just a buffer position.


--
Joost Kremers, PhD
University of Frankfurt
Institute for Cognitive Linguistics
Grüneburgplatz 1
60629 Frankfurt am Main, Germany