GNU bug report logs - #19347
24.4.50; Display of bengali text

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From: Andreas Schwab <schwab <at> suse.de>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 19347 <at> debbugs.gnu.org, rms <at> gnu.org
Subject: bug#19347: 24.4.50; Display of bengali text
Date: Wed, 17 Dec 2014 21:02:53 +0100

Eli Zaretskii <eliz <at> gnu.org> writes:

>> Date: Wed, 17 Dec 2014 10:44:24 -0500
>> From: Richard Stallman <rms <at> gnu.org>
>> CC: schwab <at> suse.de, 19347 <at> debbugs.gnu.org
>> 
>> The 6 characters fill 7 columns with the blob that indicates a character
>> that can't be displayed.  This causes anomalies in cursor motion
>> within the line.
>> 
>> If the line is almost 80 characters, it overflows
>> the line on the terminal, causing vertical positioning anomalies too.
>> 
>> These consequences typically occur when text sent to the terminal
>> occupies more columns than Emacs expects it to occupy.
>
> Right.  Does it help to disable compositions?
>
>   M-x auto-composition-mode RET

Composition mode has no effect in a termcap frame.  I can see a similar
effect in emacs -nw running in Kconsole, because Konsole is apparently
doing composition on its own, causing the (uncomposed) characters no
longer occupy exactly one column.  Moving over such a composed (by the
terminal) character temporarily breaks up the composition.

But on the Linux console I'm only seeing replacement characters without
any display glitches.

Andreas.

-- 
Andreas Schwab, schwab <at> linux-m68k.org
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
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