Re: Why tree-sitter instead of Semantic? (was Re: CC Mode with font-lock-maximum-decoration 2)

[Eli Zaretskii]

> From: Po Lu <luangruo@yahoo.com>
> Cc: Eli Zaretskii <eliz@gnu.org>,  Alan Mackenzie <acm@muc.de>,  emacs-devel
>  <emacs-devel@gnu.org>
> Date: Wed, 10 Aug 2022 10:14:58 +0800
> 
> Lynn Winebarger <owinebar@gmail.com> writes:
> 
> > I'm curious, though, as to why Semantic/CEDET seems to have been
> > superceded by external solutions like tree-sitter or LSP-based
> > (non-emacs) servers.  One of the draws of Emacs for me is the
> > "batteries included" nature of it having Emacs Lisp built in.  Is
> > there a downside to using Semantic as the basis for improving my
> > derived mode that's non-obvious?
> 
> I think Semantic lost intertia after the original author lost interest
> in it (or left for unrelated reasons, I don't remember which.)

It is simply too slow to be a modern solution for these features.