bug#28182: maybe implement CTRL++ to zoom text

[Stefan Kangas]

Juri Linkov <juri@linkov.net> writes:

> >> Another variant is to add special symbols to
> >> the existing customization, e.g.:
> >>
> >>   '(5 ((shift) . 1) ((control) . text-scale) ((meta) . nil))
> >>
> >> or even support text-scale step number if needed:
> >>
> >>   '(5 ((shift) . 1) ((control) . (text-scale . 1)) ((meta) . nil))
> >
> > I like your idea that this would all be defined in one place.
> >
> > One nit is that the variable name there is mouse-wheel-scroll-amount,
> > and I'm not sure this is the best name for functionality to change the
> > font size.  If we go ahead with that, perhaps it should be renamed to
> > something like mouse-wheel-scroll-modifiers?
>
> It looks like mouse-wheel-scroll-amount still makes some sense
> as using wheel-scrolling to change the amount of font pixels.
> Generally it's better to refrain from renaming old customisable
> variables when possible.

I've attached a tentative patch along those lines.  WDYT?

I'm not sure exactly how to reformulate the doc string for
mouse-wheel-scroll-amount to fit the new behaviour.  I'll have to
think about it a bit more.  Do let me know if you have any ideas.

Best regards,
Stefan Kangas

0001-Support-changing-font-size-using-mouse-wheel.patch
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