GNU bug report logs - #73404
30.0.50; [forward/kill/etc]-sexp commands do not behave as expected in tree-sitter modes

Previous Next

Full log

Message #181 received at 73404 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Theodor Thornhill <theo <at> thornhill.no>
Cc: casouri <at> gmail.com, mickey <at> masteringemacs.org, 73404 <at> debbugs.gnu.org,
 monnier <at> iro.umontreal.ca, juri <at> linkov.net
Subject: Re: bug#73404: 30.0.50; [forward/kill/etc]-sexp commands do not
 behave as expected in tree-sitter modes
Date: Sun, 05 Jan 2025 14:18:17 +0200

> X-Spam-Status: No, score=-1 tagged_above=-10 required=5 tests=[ALL_TRUSTED=-1]
>  autolearn=ham autolearn_force=no
> From: Theodor Thornhill <theo <at> thornhill.no>
> Cc: casouri <at> gmail.com, mickey <at> masteringemacs.org, 73404 <at> debbugs.gnu.org,
>  monnier <at> iro.umontreal.ca
> Date: Sun, 05 Jan 2025 12:46:03 +0100
> 
> Juri Linkov <juri <at> linkov.net> writes:
> 
> > The command is 'forward-list'.  With 'list' it will do in ts-modes
> > the same that 'forward-list' already does in non-ts modes.
> 
> One issue I've had when exploring these things earlier is that I don't
> know the "spec" for how navigation in programming languages should work
> in Emacs. I mean, there are lots of examples in the source code, but no
> true specification. Should we possibly try to define some sane defaults
> here, so that it will be simpler to deal with idiosyncrasies of the tree
> sitter parsers? Lisp isn't in my experience the best language to define
> this, as it is just too simple. Also, many of the functions are related
> to word processing, like sentence, word, paragraph etc, which aren't
> really useful in programming, imo. What is a sentence in java, lisp, or
> python, for example? Also, maybe sexp is too lisp/ast-like of a term, so
> much so that it is hard to reason about what a sexp is or isn't.

Is this goal achievable in practice,l given the sometimes radical
differences between languages?  Maybe we only can have examples and
some dwim-ish behavior in most cases?

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.