Re: [RFE] python-mode: removing `file` keyword from syntax highlight

[Konstantin Kharlamov]

On Fri, 2025-01-24 at 14:14 -0500, Howard Melman wrote:
> Konstantin Kharlamov <Hi-Angel@yandex.ru> writes:
> 
> > > I am also one of those in a position where I still need to
> > > support
> > > Python 2 code.
> > > 
> > > However, I know that Python 2 has already been EOL for a long
> > > time
> > > and that very few people still use it.  Furthermore, even if some
> > > keywords are not highlighted, it does not mean that we cannot
> > > edit
> > > Python 2 code.  So I am not strongly against removing the Python
> > > 2
> > > keywords if many people want to.
> > 
> > I see. Okay, what do you think then about adding to the mode
> > initialization a check that would check if the first line of the
> > buffer
> > has word `python2`, and would otherwise assume it is python3 and
> > turn
> > off the python2 keywords highlight?
> 
> Why not have a python2-mode that derives from python-mode
> with a few changes in it?

I didn't look at it, but I would presume there may be places where
python3 and python2 keywords are mixed, so just adding an
initialization switch may be simpler. We already have an example of
such mode: diff-mode has detection of whether current diff is produced
by `git` to cover for `--` symbol being a separator rather than a
"deleted line".