> Date: Sun, 20 Nov 2022 14:47:09 +0000 > From: Alan Mackenzie <acm@muc.de> > > Just for fun, I downloaded the feature/tree-sitter branch, and tried > scrolling through a large C buffer, from file packet-rrc.c. This file > is part of Wireshark, and was the topic of bug #45248. It is just under > 10 MB big. > > To scroll all the way through the file with c-ts-mode took ~53 minutes. > For comparison, in C Mode it to ~157 seconds. That's a factor of around > 20 difference. > > Also of interest, towards the end of the buffer in c-ts-mode, the > font-locking gave up completely. It was in an initialisation for a big > brace block. > > I'm probably not saying anything people don't already know, but the > measured timings might be helpful. Thanks, but please report this and similar issues using report-emacs-bug, not here.
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