reftex-label-regexps

reftex-label-regexps is a variable defined in `reftex-vars.el'.
Its value is

("\\\\label{\\(?1:[^}]*\\)}" "\\[[^]]*\\

Documentation:
List of regexps matching \label definitions.
The default value matches usual \label{...} definitions and
keyval style [..., label = {...}, ...] label definitions. It is
assumed that the regexp group 1 matches the label text, so you
have to define it using \(?1:...\) when adding new regexps.

When changed from Lisp, make sure to call
`reftex-compile-variables' afterwards to make the change
effective.

You can customize this variable.

This variable was introduced, or its default value was changed, in version 24.4 of Emacs.