On Tue, Nov 26, 2013 at 1:29 PM, Michael Montague <xxxxxx@gmail.com> wrote:

I just briefly looked through the documentation for GNU Emacs and could not find the equivalent of 'valid-sre?'.

Much of that code is written in C. It would clearly be useful to be able to give a user an error message about having typed an invalid regular expression when using `re-search-forward', for example.