bug#59122: 29.0.50; global-text-scale-adjust not working

[Gregory Heytings]

> > In other words, to have *no change* in font size, I have do:
> >
> > 1. type `M-x' and `global-text-scale-adjust' and `RET'
> > 2. type `-'
> > 3. type `q'
> >
> > `text-scale-adjust' does this too, so I guess ... a feature?
>
> Yes, but why would you need to invoke the command if you don't want to 
> change the size of the font?  What kind of use case is that?

For the sake of completeness: these commands are meant to be used with 
their bindings, which are

C-<wheel-up> / C-<wheel-down> / C-x C-- / C-x C-+ / C-x C-0 / C-x C-=

and

C-M-<wheel-up> / C-M-<wheel-down> / C-x C-M-- / C-x C-M-+ / C-x C-M-0 / C-x 
C-M-=