bug#60484: 29.0.60; c-ts-mode: short tokens are not identified as type_identifier

[Mohammed Sadiq]

On 2023-01-02 18:15, Eli Zaretskii wrote:
> > Date: Mon, 02 Jan 2023 18:13:34 +0530
> > From: Mohammed Sadiq <sadiq@sadiqpk.org>
> > Cc: 60484@debbugs.gnu.org
> >
> > On 2023-01-02 17:45, Eli Zaretskii wrote:
> > >> Date: Mon, 02 Jan 2023 10:22:09 +0530
> > >> From: Mohammed Sadiq <sadiq@sadiqpk.org>
> > >>
> > >> Short tokens are not identified as type_identifier in GNU Emacs
> > >> c-ts-mode, but does work fine with tree-sitter playground[0].
> > >>
> > >> Say for example, 'a_type' in an empty buffer is identified as a
> > >> type_identifier in tree-sitter playground, but not in c-ts-mode,
> > >> while say, some longer tokens like 'window_type' is identified as
> > >> type_identifier.
> > >
> > > Where is it written that FOO_type is a type identifier?  is this
> > > something new in some recent C Standard?  Or is it just a popular
> > > convention?
> >
> > 'a_type' was just a made up example, it can be any valid token, say
> > 'g_file', or whatever.  I was pointing out a disparity in handling of
> > some token in c-ts-mode and tree-sitter: tree-sitter identifiers a 6
> > byte length token as an identifier, but c-ts-mode requires it to be
> > at least 11 byte sized for custom types.
>
> I'm not sure I see a problem here.  It sounds like different
> heuristics to me.  Nothing says that g_file is a type, only its
> parsing can tell.

well, c-ts-mode uses tree-sitter-c under the hood, so it's not supposed 
to
behave differently.

Anyway, my use case is that I use ';' after a token to convert the 
preceding
token (if type) to a camel case and insert a *.

So: typing g_file; shall be converted to GFile * (but it works only if 
g_file
is identified as a type identifier, which is not the case now). I 
already does
'_' on SPC and S-SPC shall insert a real space.  Sorry for that my use 
case
could be a really weird one. ;)


cheers,
Mohammed Sadiq