* Bruno Le Floch <[log in to unmask]> [2012-02-02 10:57:16 -0500]:

Hi Bruno/all,


I'm having some problem with expansion. The following is a
contrived example of what's going wrong. I must be missing
something obvious.

    \expandafter
    \xdef\csname #1\endcsname ##1{%
        \regex_match:nnTF{o}{o}{{0}{0}}{{1}{1}}
    }

This defines some macro with the following definition:

    macro:#1->\regex_match:nnTF {o}{o}{{0}{0}}{{1}{1}}

I'd have thought the body of an xdef would be fully expanded
(unless you put an explicit \noexpand in front of an expression).

Why doesn't the \regex_match expand? If there's any documentation
I should read in order to understand this, please let me know where
to find it.

Lots of thanks in advance.

Regards,


Marc