Improve regex documentation
commit256d85494e71777acab81ff9abc5f9b7e1d79789
authorPaul Eggert <eggert@cs.ucla.edu>
Wed, 22 Jun 2022 05:02:12 +0000 (22 00:02 -0500)
committerPaul Eggert <eggert@cs.ucla.edu>
Wed, 22 Jun 2022 05:35:59 +0000 (22 00:35 -0500)
treeb621d9741f474d00c63f7a3ad118e594a4eb52b7
parent0c762675366bb7ce256812bbc40aa8afa004f1f2
Improve regex documentation

* doc/autoconf.texi (Running the Preprocessor)
(Limitations of Usual Tools):
Improve comments on limitations of regular expressions.
doc/autoconf.texi