bug#20872: 24.5; add-face-text-property doesn't work for :height

[Oleh Krehel]

Stefan Monnier <monnier@iro.umontreal.ca> writes:

>>     (add-face-text-property 0 (length asdf) '(:height 1.0) nil asdf)
>
> ":height 1.0" means "multiply the height by 1", i.e. it's a no-op.
>
>> minibuffer. In that case, I want to keep all face properties, except the
>> height. Since extra height messes up the trimming of strings to
>> `window-width'.
>
> You can try to set :height to the *integer* pixel height of the
> minibuffer lines.

Thanks, that's even better. Should I use this:

(add-face-text-property
 0 (length asdf)
 `(:height ,(face-attribute 'default :height)) nil asdf)