Subject: [PATCH] Make compilation-mode regexp matching case-sensitive

From: Mattias Engdegård <[email-masked]>
Date: Wed, 18 Mar 2020 16:31:49 +0100

Since the regexps being matched in compilation-mode are numerous, independently written, and often intersect, it makes sense to use case-sensitive matching. After all, compiler messages do not change case between runs.

Doing so improves performance: case-insensitive matching is slightly slower and stricter matching allows for earlier rejection. It also reduces collisions, and it is probably what everybody assumed anyway.