Subject: bug#37440: [PATCH] New rx implementation with extension constructs

From: Paul Eggert <[email-masked]>
Date: Tue, 17 Sep 2019 10:47:37 -0700

I like the rx proposal in <https://bugs.gnu.org/37440>. Let's install it into 
master if no significant problems turn up after a few days of review. Thanks for 
bird-dogging it.