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bug#19347: 24.4.50; Display of bengali text

From: Andreas Schwab
Subject: bug#19347: 24.4.50; Display of bengali text
Date: Wed, 17 Dec 2014 21:02:53 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.4 (gnu/linux)

Eli Zaretskii <address@hidden> writes:

>> Date: Wed, 17 Dec 2014 10:44:24 -0500
>> From: Richard Stallman <address@hidden>
>> CC: address@hidden, address@hidden
>> 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 Schwab, address@hidden
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