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From: Eli Zaretskii <eliz@gnu.org>
To: Stefan Monnier <monnier@iro.umontreal.ca>
Cc: cpitclaudel@gmail.com, alan@idiocy.org, pipcet@gmail.com,
	emacs-devel@gnu.org
Subject: Re: Ligatures
Date: Sat, 23 May 2020 16:10:31 +0300	[thread overview]
Message-ID: <83o8qeztiw.fsf@gnu.org> (raw)
In-Reply-To: <jwvlflilt61.fsf-monnier+emacs@gnu.org> (message from Stefan Monnier on Sat, 23 May 2020 08:47:57 -0400)

> From: Stefan Monnier <monnier@iro.umontreal.ca>
> Cc: Pip Cet <pipcet@gmail.com>,  cpitclaudel@gmail.com,  alan@idiocy.org,
>   emacs-devel@gnu.org
> Date: Sat, 23 May 2020 08:47:57 -0400
> 
> I wonder how it is supposed to work and it works in other applications:

I have no idea.  If someone does, it would be good to hear the
details.

> Do current applications use a heuristic like "ligatures won't reduce the
> size by more than a factor 2, so estimate the lower bound on the final
> size to be at most half of what the font metrics say", so they will send
> up to twice as much text to be shaped as needed, and then they throw
> away the left overs?

As I wrote elsewhere, HarfBuzz developers actually prefer to see the
entire paragraph, not just screen line, because some shaping decisions
depend on that.  Not sure what the other applications do about that.



  reply	other threads:[~2020-05-23 13:10 UTC|newest]

Thread overview: 145+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-17 10:41 Unify the Platforms: Cairo+FreeType+Harfbuzz Everywhere (except TTY) Julius Pfrommer
2020-05-17 14:09 ` Arthur Miller
2020-05-17 14:30   ` Eli Zaretskii
2020-05-17 15:06     ` Arthur Miller
2020-05-17 15:56       ` Eli Zaretskii
2020-05-17 16:50         ` Arthur Miller
2020-05-17 17:06           ` Eli Zaretskii
2020-05-17 14:35 ` Eli Zaretskii
2020-05-17 14:59   ` Julius Pfrommer
2020-05-17 15:55     ` Eli Zaretskii
2020-05-17 16:28       ` Pip Cet
2020-05-17 17:00         ` Eli Zaretskii
2020-05-17 18:50           ` Pip Cet
2020-05-17 19:17             ` Eli Zaretskii
2020-05-18 16:08               ` Ligatures (was: Unify the Platforms: Cairo+FreeType+Harfbuzz Everywhere (except TTY)) Eli Zaretskii
2020-05-18 16:45                 ` tomas
2020-05-18 16:49                   ` Eli Zaretskii
2020-05-18 17:05                 ` Ligatures Stefan Monnier
2020-05-18 17:18                   ` Ligatures Eli Zaretskii
2020-05-18 19:19                     ` Ligatures Pip Cet
2020-05-18 19:25                       ` Ligatures tomas
2020-05-18 19:41                         ` Ligatures Pip Cet
2020-05-18 20:20                           ` Ligatures tomas
2020-05-18 19:33                       ` Ligatures Eli Zaretskii
2020-05-18 19:44                         ` Ligatures Clément Pit-Claudel
2020-05-19  2:25                           ` Ligatures Eli Zaretskii
2020-05-19  2:44                             ` Ligatures Clément Pit-Claudel
2020-05-19 13:59                               ` Ligatures Eli Zaretskii
2020-05-19 14:35                                 ` Ligatures Clément Pit-Claudel
2020-05-19 15:21                                   ` Ligatures Eli Zaretskii
2020-05-19 15:44                                     ` Ligatures Clément Pit-Claudel
2020-05-19 16:15                                       ` Ligatures Eli Zaretskii
2020-05-19 15:36                                 ` Ligatures Tassilo Horn
2020-05-19 16:08                                   ` Ligatures Eli Zaretskii
2020-05-19 16:14                                   ` Ligatures Stefan Monnier
2020-05-19  3:47                             ` Ligatures Stefan Monnier
2020-05-19  4:51                               ` Ligatures Clément Pit-Claudel
2020-05-18 19:38                       ` Ligatures Clément Pit-Claudel
2020-05-19 14:55                         ` Ligatures Pip Cet
2020-05-19 15:30                           ` Ligatures Clément Pit-Claudel
2020-05-19 15:52                             ` Ligatures Pip Cet
2020-05-18 17:24                   ` Ligatures tomas
2020-05-18 17:41                     ` Ligatures Eli Zaretskii
2020-05-18 19:07                       ` Ligatures tomas
2020-05-18 19:17                         ` Ligatures Eli Zaretskii
2020-05-18 20:33                     ` Ligatures Stefan Monnier
2020-05-18 17:31                 ` Ligatures (was: Unify the Platforms: Cairo+FreeType+Harfbuzz Everywhere (except TTY)) Clément Pit-Claudel
2020-05-18 17:39                   ` Eli Zaretskii
2020-05-18 19:01                     ` Clément Pit-Claudel
2020-05-18 19:15                       ` Eli Zaretskii
2020-05-18 19:18                       ` tomas
2020-05-18 20:37                       ` Ligatures Stefan Monnier
2020-05-18 21:59                       ` Ligatures (was: Unify the Platforms: Cairo+FreeType+Harfbuzz Everywhere (except TTY)) Alan Third
2020-05-19 13:56                         ` Eli Zaretskii
2020-05-19 14:39                           ` Clément Pit-Claudel
2020-05-19 21:43                             ` Pip Cet
2020-05-20  1:41                               ` Clément Pit-Claudel
2020-05-20  2:07                               ` Ligatures Stefan Monnier
2020-05-20  7:14                               ` Ligatures (was: Unify the Platforms: Cairo+FreeType+Harfbuzz Everywhere (except TTY)) tomas
2020-05-20 15:18                               ` Eli Zaretskii
2020-05-20 17:31                                 ` Clément Pit-Claudel
2020-05-20 18:01                                   ` Eli Zaretskii
2020-05-20 18:33                                     ` Clément Pit-Claudel
2020-05-20 18:49                                       ` Eli Zaretskii
2020-05-20 18:53                                         ` Clément Pit-Claudel
2020-05-20 19:02                                           ` Eli Zaretskii
2020-05-20 23:19                                   ` Ligatures Stefan Monnier
2020-05-21 10:01                                 ` Ligatures (was: Unify the Platforms: Cairo+FreeType+Harfbuzz Everywhere (except TTY)) Pip Cet
2020-05-21 14:11                                   ` Eli Zaretskii
2020-05-21 16:26                                     ` Pip Cet
2020-05-21 19:08                                       ` Eli Zaretskii
2020-05-21 20:51                                         ` Clément Pit-Claudel
2020-05-21 21:16                                           ` Pip Cet
2020-05-22  6:12                                             ` Eli Zaretskii
2020-05-22  9:25                                               ` Pip Cet
2020-05-22 11:23                                                 ` Eli Zaretskii
2020-05-22 12:52                                                   ` Pip Cet
2020-05-22 13:15                                                     ` Eli Zaretskii
2020-05-22 13:29                                                       ` Clément Pit-Claudel
2020-05-22 14:30                                                         ` Eli Zaretskii
2020-05-22 14:34                                                           ` Clément Pit-Claudel
2020-05-22 19:01                                                             ` Eli Zaretskii
2020-05-22 19:33                                                               ` Clément Pit-Claudel
2020-05-22 19:44                                                                 ` Eli Zaretskii
2020-05-22 20:02                                                                   ` Clément Pit-Claudel
     [not found]                                                                     ` <83mu5z171j.fsf@gnu.org>
2020-05-23 14:34                                                                       ` Clément Pit-Claudel
2020-05-23 16:18                                                                         ` Eli Zaretskii
2020-05-23 16:37                                                                           ` Clément Pit-Claudel
2020-05-22 13:56                                                       ` Pip Cet
     [not found]                                                         ` <83lflj16jn.fsf@gnu.org>
     [not found]                                                           ` <AF222EA0-FE05-4224-8459-2BF82CE27266@vasilij.de>
     [not found]                                                             ` <834ks7110w.fsf@gnu.org>
2020-05-23 11:24                                                               ` Vasilij Schneidermann
2020-05-23 13:04                                                                 ` Eli Zaretskii
     [not found]                                                           ` <83eerb145r.fsf@gnu.org>
     [not found]                                                             ` <CAOqdjBeef8Fa596raEyBUwv0Zr+41LSiYvHW39EdoaXpyxCXVw@mail.gmail.com>
     [not found]                                                               ` <831rnb0zld.fsf@gnu.org>
2020-05-23 12:36                                                                 ` Pip Cet
2020-05-23 14:08                                                                   ` Eli Zaretskii
2020-05-23 15:13                                                                     ` Pip Cet
2020-05-23 16:34                                                                       ` Eli Zaretskii
2020-05-23 22:38                                                                         ` Pip Cet
2020-05-24 15:33                                                                           ` Eli Zaretskii
2020-05-26 18:13                                                                             ` Pip Cet
2020-05-26 19:46                                                                               ` Eli Zaretskii
2020-05-27  9:36                                                                                 ` Pip Cet
2020-05-27 17:13                                                                                   ` Eli Zaretskii
2020-05-27 18:42                                                                                     ` Pip Cet
2020-05-27 19:19                                                                                       ` Eli Zaretskii
2020-05-23 17:32                                                                       ` Eli Zaretskii
2020-05-23 21:29                                                                         ` Pip Cet
2020-05-24 15:19                                                                           ` Eli Zaretskii
2020-05-23 12:47                                                                 ` Ligatures Stefan Monnier
2020-05-23 13:10                                                                   ` Eli Zaretskii [this message]
2020-05-23 13:45                                                                     ` Ligatures Stefan Monnier
2020-05-23 14:12                                                                       ` Ligatures Eli Zaretskii
2020-05-23 13:36                                                                   ` Ligatures 조성빈
2020-05-23 14:15                                                                     ` Ligatures Stefan Monnier
2020-05-23 14:37                                                                   ` Ligatures Pip Cet
2020-05-22 11:44                                           ` Ligatures (was: Unify the Platforms: Cairo+FreeType+Harfbuzz Everywhere (except TTY)) Eli Zaretskii
2020-05-22 13:26                                             ` Clément Pit-Claudel
2020-05-22 14:29                                               ` Eli Zaretskii
2020-05-22 14:32                                                 ` Clément Pit-Claudel
2020-05-22 19:00                                                   ` Eli Zaretskii
2020-05-21 21:06                                         ` Pip Cet
2020-05-22  6:06                                           ` Eli Zaretskii
2020-05-22  9:34                                             ` Pip Cet
2020-05-22 11:33                                               ` Eli Zaretskii
2020-05-19 20:26                           ` Alan Third
2020-05-19 10:09                   ` Trevor Spiteri
2020-05-19 14:22                     ` Eli Zaretskii
2020-05-19  5:43                 ` Ligatures ASSI
2020-05-19  7:22                   ` Ligatures tomas
2020-05-19  7:55                     ` Ligatures Joost Kremers
2020-05-19  8:07                       ` Ligatures tomas
2020-05-19 10:17                         ` Ligatures Yuri Khan
2020-05-19 14:26                           ` Ligatures Eli Zaretskii
2020-05-19 19:00                             ` Ligatures Yuri Khan
2020-05-19 10:43                         ` Ligatures Werner LEMBERG
2020-05-19 10:48                           ` Ligatures tomas
2020-05-19 14:18                   ` Ligatures Eli Zaretskii
2020-05-19 14:52                     ` Ligatures Eli Zaretskii
2020-05-19 15:11                       ` Ligatures Pip Cet
2020-05-19 15:36                         ` Ligatures Eli Zaretskii
2020-05-19 16:16                           ` Ligatures Pip Cet
2020-05-19 16:41                             ` Ligatures Eli Zaretskii
2020-05-19 17:00                             ` Ligatures Eli Zaretskii
2020-05-17 18:28       ` Unify the Platforms: Cairo+FreeType+Harfbuzz Everywhere (except TTY) Julius Pfrommer
2020-05-17 18:45         ` Eli Zaretskii
2020-05-17 22:28         ` chad
2020-05-18 22:08         ` Alan Third

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