Re: An anonymous IRC user's opinion

[Dmitry Gutov]

On 10/10/2024 07:56, Eli Zaretskii wrote:
> > That seems unlikely: as long as the auto-mode-alist configuration for
> > rust-ts-mode is done early on in Emacs's startup, any installed 3rd
> > party package such as rust-mode would add its config later, and thus
> > have priority.
> I don't have objections to making Rust recognized automatically and
> activating rust-ts-mode, if people think this danger is low or
> non-existent, and if *.rs files are not commonly used for something
> completely unrelated (e.g., I see on my Windows system quite a few
> *.rs files that seem to be some kind of Windows data files).

Actually, thinking back the last time we made such a move, we got a 
report from a user who preferred to have files in question (*.toml) in 
fundamental-mode, because they didn't want the hassle of installing the 
toml tree-sitter grammar (bug#60559).

The said user didn't have Emacs compiled with tree-sitter, so if we 
wanted to revisit that issue, we could enable ts mode globally when 
Emacs is compiled with that support, and when it isn't, keep them out of 
auto-mode-alist.

That could still lead to inconveniences sometimes, but at the very least 
it would follow the reporter's request from down the thread:

> If emacs was configured with tree-sitter, it seems productive to
warn the user when tree-sitter grammars are missing.  It seems
likely that user intended to have tree-sitter.

> When emacs is NOT configured with tree-sitter, it seems
counter-productive to warn about missing tree-sitter.

> I even pass --without-tree-sitter to configure now.  It seems
particularly surprising to me that I explicitly tell emacs "don't
use tree-sitter" and then it immediately starts complaining to me
that it doesn't have tree-sitter.