RE: [External] : Re: Text scale mode and additional fonts

[Drew Adams]

> > > > (set-fontset-font t 'arabic +bidi-arabic-font)
> > > >
> > > > this makes the initial situation better but now the Urdu text is not
> > > > affected by the `text-scale-mode` commands.
> > >
> > > That's because the :size attribute is absolute: 28.  Instead, use a
> > > relative value, a float such as 1.5, then it should scale with the
> > > rest of the text.
> >
> > Very useful info.  But I don't see that spelled
> > out clearly in the doc.  There I find only
> > statements such as these.  Do they perhaps imply
> > what you stated?
> >
> > `:size'
> >
> > VALUE must be a non-negative integer or a floating point number
> > specifying the font size.  It specifies the font size in pixels (if
> > VALUE is an integer), or in points (if VALUE is a float).
> 
> Sorry, I was confused.  What I wrote is true for the :height
> attribute of a face, not about :size in a font-spec.  IOW, to get what
> he wants, the OP should define a face with :height attribute a float.

Thanks for clarifying.  That makes sense.