I can't seem to set the AC_DEFINE value....

[Bruce Korb]

Hi,

It would be really, really convenient to be able to
shell-evaluate the value inserted into the config.h file.
Unfortunately, this construct:

> cat >>confdefs.h <<\_ACEOF
> #define REGEX_HEADER "<${ag_cv_with_regex_header}>"
> _ACEOF

gets in my way.  I would really, really prefer to not be
forced to have some funny -DREGEX_HEADER="${AG_REGEX_HEADER}"
on all the compile command lines.  As far as I can tell,
there is no real need to quote the _ACEOF.