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bug#20727: 24.5; Font fallback doesn't work for the Emoji range
From: |
Eli Zaretskii |
Subject: |
bug#20727: 24.5; Font fallback doesn't work for the Emoji range |
Date: |
Sun, 14 Jun 2015 20:37:44 +0300 |
> Date: Sun, 14 Jun 2015 09:14:27 -0700
> From: Paul Eggert <eggert@cs.ucla.edu>
> CC: v.schneidermann@gmail.com, andrewjmoreton@gmail.com,
> 20727@debbugs.gnu.org
>
> I'm not sure, but I found that my ~/.emacs file, at the end, said
> "(custom-set-faces)" -- something I didn't put in there, but I suppose I ran
> "customize" at some point in the unremembered past, though I don't remember
> ever
> customizing fonts. I suppose the settings installed by custom-set-faces,
> whatever they are, alter the fonts installed by the recent change, and this
> messes up my testing. (Possibly they saved faces calculated *before* the
> recent
> change to Emacs, and custom-set-faces is trying to restore them?) I will
> comment out the customization code before doing further testing, but these
> are
> the sorts of glitches that I fear will affect other users.
We will have to wait and see, I guess. I hope the problems will not
be acute, mostly when someone already have fontset customizations, and
therefore can adapt.
> U+201F DOUBLE HIGH-REVERSED-9 QUOTATION MARK now displays as
> xft:-unknown-Symbola-normal-normal-semicondensed-*-17-*-*-*-*-0-iso10646-1
> (#x39B) which is spidery, whereas it formerly displayed as
> xft:-unknown-FreeMono-normal-normal-normal-*-17-*-*-*-m-0-iso10646-1 (#x8A8)
> which is more legible.
>
> U+204F REVERSED SEMICOLON has a similar problem.
>
> U+2047 DOUBLE QUESTION MARK
> U+2048 QUESTION EXCLAMATION MARK
> U+2049 EXCLAMATION QUESTION MARK
> are too large in Symbola; the old FreeMono version was better.
These are all in the General Punctuation block. FreeMono covers only
about one third of the block (40 characters out of 111); Symbola
covers all of them. It's a simple change to prefer FreeMono for those
characters that it supports (after all, FreeMono is a GNU font), but
won't that have adverse effect if some other punctuation characters,
unsupported by FreeMono, will have to be displayed? You can try
something like
(set-fontset-font "fontset-default" '(#x2047 . #x204B) "FreeMono")
and then try typing characters from this range and also a few outside
of it, but still between 2000..206F -- is the result acceptable? It
looks weird on my system, but I think I'm less sensitive to these
issues, so I'm not sure about others.
> The currency symbols look worse than before: they used to be constant-width
> (most of them anyway) and matched Ubuntu Mono better. Perhaps we should
> leave
> them alone?
Which font did they use before?
In general, most fonts support only a handful of characters in the
Currency Symbol block. I left only the Euro sign, which is almost
universally supported, out of Symbola coverage. I could add a few
more to the exempted codepoints, or indeed leave out the entire block,
but then we could risk boxes with hex code with some fonts.
> Thanks for doing all this -- it must have taken you quite some time.
You're welcome. Yes, that's a lot of mundane work, but someone needs
to do it.
- bug#20727: 24.5; Font fallback doesn't work for the Emoji range, (continued)
- bug#20727: 24.5; Font fallback doesn't work for the Emoji range, Paul Eggert, 2015/06/13
- bug#20727: 24.5; Font fallback doesn't work for the Emoji range, Eli Zaretskii, 2015/06/13
- bug#20727: 24.5; Font fallback doesn't work for the Emoji range, Paul Eggert, 2015/06/13
- bug#20727: 24.5; Font fallback doesn't work for the Emoji range, Eli Zaretskii, 2015/06/13
- bug#20727: 24.5; Font fallback doesn't work for the Emoji range, Paul Eggert, 2015/06/13
- bug#20727: 24.5; Font fallback doesn't work for the Emoji range, Eli Zaretskii, 2015/06/13
- bug#20727: 24.5; Font fallback doesn't work for the Emoji range, Eli Zaretskii, 2015/06/14
- bug#20727: 24.5; Font fallback doesn't work for the Emoji range, Paul Eggert, 2015/06/14
- bug#20727: 24.5; Font fallback doesn't work for the Emoji range,
Eli Zaretskii <=
- bug#20727: 24.5; Font fallback doesn't work for the Emoji range, Paul Eggert, 2015/06/14
- bug#20727: 24.5; Font fallback doesn't work for the Emoji range, Eli Zaretskii, 2015/06/15