Subject: M-x compile still very line-length weak

From: 積丹尼 Dan Jacobson <[email-masked]>
Date: Thu, 13 Feb 2020 13:51:57 +0800

Compare M-x compile on make aaa vs. make bbb
$ cat Makefile
aaa:; perl -we 'print " "  x 9999;' #finishes right away.
bbb:; perl -we 'print "\n" x 9999;' #takes several seconds, even on the latest hardware.

(Indeed, on even longer lines we even see both the words "exit" and "Compiling" at the same time in the modeline.)
emacs-version "26.3"