From: Eli Zaretskii <eliz@gnu.org>
To: Lars Ingebrigtsen <larsi@gnus.org>
Cc: vincent@vinc17.net, 29078@debbugs.gnu.org
Subject: bug#29078: 25.2; font issue with FreeType 2.8; should not use the rounded ascender and descender
Date: Tue, 19 Nov 2019 17:55:07 +0200 [thread overview]
Message-ID: <838sob3lpg.fsf@gnu.org> (raw)
In-Reply-To: <87h831orio.fsf@gnus.org> (message from Lars Ingebrigtsen on Mon, 18 Nov 2019 21:31:43 +0100)
> From: Lars Ingebrigtsen <larsi@gnus.org>
> Cc: Eli Zaretskii <eliz@gnu.org>, 29078@debbugs.gnu.org
> Date: Mon, 18 Nov 2019 21:31:43 +0100
>
> Vincent Lefevre <vincent@vinc17.net> writes:
>
> > On 2019-11-18 19:32:41 +0100, Lars Ingebrigtsen wrote:
> >> Using
> >>
> >> ftcrhb:-PfEd-DejaVu Sans
> >> Mono-normal-normal-normal-*-25-*-*-*-m-0-iso10646-1 (#x957)
> >
> > Under Debian/unstable, I don't get it either. Neither with
> >
> > ftcrhb:-PfEd-DejaVu Sans Mono-normal-normal-normal-*-15-*-*-*-m-0-iso10646-1
> >
> > But the bug occurs with
> >
> > ftcrhb:-PfEd-DejaVu Sans Mono-normal-normal-normal-*-18-*-*-*-m-0-iso10646-1
> >
> > That's for the rendering. I don't know whether the cell height is
> > honored in all these cases.
>
> Ah, yes. If I say
>
> emacs -Q -fn "DejaVu Sans Mono:size=30"
>
> and vary the size, I get the gaps in the lines for some sizes (like 23)
> but not others (like 25).
Strangely, I see small (1- or 2-pixel) gaps for Courier New on
MS-Windows, and only for a couple of size values. Moreover, with
DejaVu Sans Mono, I don't see any gaps for all sizes between 9 and 30.
FWIW, the font-related APIs on MS-Windows report glyph metrics as
integer values, so Emacs doesn't round anywhere. So either MS-Windows
does a better job with that font (unlikely) or there's something else
at work here.
I guess we will have to wait until someone tells us what to do here.
prev parent reply other threads:[~2019-11-19 15:55 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-31 10:12 bug#29078: 25.2; font issue with FreeType 2.8; should not use the rounded ascender and descender Vincent Lefevre
2017-10-31 10:53 ` Robert Pluim
2017-10-31 11:22 ` Werner LEMBERG
2017-10-31 13:43 ` Vincent Lefevre
2017-10-31 15:45 ` Werner LEMBERG
2017-10-31 14:00 ` Robert Pluim
2017-10-31 16:24 ` Werner LEMBERG
2019-11-17 8:02 ` Lars Ingebrigtsen
2019-11-18 7:47 ` Vincent Lefevre
2019-11-18 8:30 ` Lars Ingebrigtsen
2019-11-18 16:05 ` Eli Zaretskii
2019-11-19 10:07 ` Robert Pluim
2019-11-19 11:34 ` Vincent Lefevre
2019-11-19 16:41 ` Stefan Kangas
2019-11-19 17:33 ` Eli Zaretskii
2019-11-18 15:36 ` Eli Zaretskii
2019-11-18 16:04 ` Vincent Lefevre
2019-11-18 17:09 ` Eli Zaretskii
2019-11-18 17:23 ` Vincent Lefevre
2019-11-18 17:50 ` Eli Zaretskii
2019-11-18 17:58 ` Eli Zaretskii
2019-11-18 18:20 ` Vincent Lefevre
2019-11-18 18:31 ` Eli Zaretskii
2019-11-18 18:15 ` Vincent Lefevre
2019-11-18 18:32 ` Lars Ingebrigtsen
2019-11-18 20:26 ` Vincent Lefevre
2019-11-18 20:31 ` Lars Ingebrigtsen
2019-11-19 15:55 ` Eli Zaretskii [this message]
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