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Bug when shifting CJK string by 1 cell

From: Egmont Koblinger
Subject: Bug when shifting CJK string by 1 cell
Date: Sat, 23 Aug 2014 18:21:21 +0200


Please see the attached test case.

First, a string is printed that begins with 'x' and is followed by some CJK.
Later, its first character is replaced by another CJK and the whole
string is printed again.

Expected: string updates properly, shifting all existing CJK chars by
half of their width.

Actual: 'x' is replaced by a space, the rest doesn't move.

I'm using 5.9+20140118 as shipped by Ubuntu Trusty, fully UTF-8
environment.  Sorry if the bug has been fixed in the mean time.


Attachment: cjktest.c
Description: Text Data

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