Bug#728949: xterm: some doublesize characters screws displaying

[Adam Lee <adam8157@gmail.com>]

Package: xterm
Version: 297-1
Severity: important

Hi,

I found this bug after Debian upgrading xterm from 295 to 297.

How to reproduce:
paste doublesize character '，' into Chinese string like "一二三", it
will truncate the character after it.

I suppose it is wrongly processed as normal width in some steps, then
overwrites half part of the character after it.

Confirmed XTerm(295) and other terminals don't have this issue.


-- System Information:
Debian Release: jessie/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (2, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.11-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages xterm depends on:
ii  libc6           2.17-93
ii  libfontconfig1  2.11.0-1
ii  libice6         2:1.0.8-2
ii  libtinfo5       5.9+20130608-1
ii  libutempter0    1.1.5-4
ii  libx11-6        2:1.6.2-1
ii  libxaw7         2:1.0.11-1
ii  libxft2         2.3.1-1
ii  libxmu6         2:1.1.1-1
ii  libxpm4         1:3.5.10-1
ii  libxt6          1:1.1.4-1
ii  xbitmaps        1.1.1-2

Versions of packages xterm recommends:
ii  x11-utils  7.7+1

Versions of packages xterm suggests:
pn  xfonts-cyrillic  <none>

-- no debconf information

-- 
Adam Lee
http://adam8157.info