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From: Richard Wordingham <richard.wordingham@ntlworld.com>
To: handa@gnu.org (K. Handa)
Cc: 20140@debbugs.gnu.org
Subject: bug#20140: 24.4; M17n shaper output rejected
Date: Sun, 5 Apr 2015 20:48:24 +0100	[thread overview]
Message-ID: <20150405204824.35d870b1@JRWUBU2> (raw)
In-Reply-To: <87mw31887h.fsf@gnu.org>

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On Wed, 25 Mar 2015 23:25:54 +0900
handa@gnu.org (K. Handa) wrote:

> Could you try these patches and test the usability of
> forward-char-intrusive and backward-char-intrusive?

The results weren't quite what I'd hoped for, but the results are
usable.  Thank you.

The text I principally tried the commands out on was Tai Tham text <LOW
PA, SIGN II, TONE-1, SAKOT, NA, OA BELOW, TONE-2>.  I used corrections
for the bugs that had been affecting its rendering.

It seems that the commands prevent shaping across the cursor, but do
not inhibit shaping within the former cluster.  I was only doing shaping
on complete orthographic syllables, so entering a cluster chiefly had
the effect of losing all positioning of marks and making the text
unreadable.  However, the behaviour may make a good teaching aid!

I then tried the command on Thai, and there the commands worked well.
I therefore added to LANA-OTF.flt, for marks not in complete syllables,
the command:

    ("(M)" [ (1 = ) ] ) ; For stepping through.

I attach the results of not stepping through (labelled 0), and
stepping through by 1 to 7 characters (labelled 1 to 7).  The result
is not so good at 3 steps - I think because the extra rendering
command does not handle SAKOT.  Aggressive use of dotted circles might
improve the display.  I don't know why, at the end, there is a delay in
TONE-2 rising to its proper height.

C-S-f is not a good key sequence for me.  C-S is one of my X-keyboard
switching combinations - I chose it for compatibility with the Xming X
server.

Richard.

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  parent reply	other threads:[~2015-04-05 19:48 UTC|newest]

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-03-18 22:20 bug#20140: 24.4; M17n shaper output rejected Richard Wordingham
2015-03-19  3:43 ` Eli Zaretskii
2015-03-21  8:33 ` K. Handa
2015-03-21 17:20   ` Wolfgang Jenkner
2015-03-21 17:58   ` Richard Wordingham
2015-03-21 18:26     ` Eli Zaretskii
2015-03-25 14:25     ` K. Handa
2015-03-25 21:45       ` Richard Wordingham
2015-04-05 19:48       ` Richard Wordingham [this message]
2022-02-03 21:21 ` Lars Ingebrigtsen
2022-02-04  7:37   ` Eli Zaretskii
2022-02-05 22:52     ` Richard Wordingham via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-02-06  8:11       ` Eli Zaretskii
2022-02-06 22:09         ` Richard Wordingham via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-02-07 14:04           ` Eli Zaretskii
2022-02-07 23:38             ` Richard Wordingham via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-02-08 22:13         ` Richard Wordingham via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-02-12 18:54           ` Eli Zaretskii
2022-02-13 16:04       ` Eli Zaretskii
2022-02-13 20:53         ` Richard Wordingham via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-02-14 13:19           ` Eli Zaretskii
2022-02-14 22:14             ` Richard Wordingham via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-02-15  1:27               ` Richard Wordingham via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-02-16 15:13                 ` Eli Zaretskii
2022-02-16 15:12               ` Eli Zaretskii
2022-02-16 15:11           ` Eli Zaretskii
2022-02-13 19:49       ` Eli Zaretskii
2022-02-13 21:11         ` Richard Wordingham via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-02-14 13:26           ` Eli Zaretskii
2022-02-14 23:26             ` Richard Wordingham via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-02-15 14:40               ` Eli Zaretskii
2022-02-15 21:06                 ` Richard Wordingham via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-02-16 13:15                   ` Eli Zaretskii
2022-02-16 19:01                     ` Richard Wordingham via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-02-16 19:20                       ` Eli Zaretskii

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