Subject: bug#34525: replace-regexp missing some matches

From: Eli Zaretskii <[email-masked]>
Date: Wed, 20 Feb 2019 21:27:24 +0200

> Date: Wed, 20 Feb 2019 18:58:50 +0000
> Cc: [email-masked], [email-masked]
> From: Alan Mackenzie <[email-masked]>
> 
> It would seem there is more to it than redisplay.

Maybe look at this from a different angle: what do we have in C++ mode
that isn't present in C mode, and could potentially affect this use
case?