bug#56249: 29.0.50; Compilation buffer parsing "ERROR:" incorrectly

[Mattias Engdegård]

30 juni 2022 kl. 11.04 skrev Lars Ingebrigtsen <larsi@gnus.org>:

> It looks pretty useful to add this to compile.el anyway, so I've now
> done so.

All right, but do you even know what is emitting the message? Gradle is just a 
build system, isn't it?. And given that, is this how source-located messages 
from that tool are generally reported or is it some kind of special case? (Cf. 
GCC C-language errors vs. Make syntax errors vs. Bash syntax errors vs. ld 
errors etc, all of which are routinely emitted from a single `make` command.)

If you still think it's a good idea, how about adding a test case for this new 
rule to `compile-tests--test-regexps-data`, as well as an example to 
etc/compilation.txt?