From:
[email protected]
Package: bash
Version: 3.0-4
Severity: normal
I recently upgraded to bash-3.0-4, and found that bash no longer is able
to interactively edit lines with double-wide characters (and in some
case other non-latin1-characters, although cases are more difficult to reproduce).
Working with LC_CTYPE=de_DE.UTF-8 (and no other LC_* nor LANG env var set), I get this on entering
"12\x{672c}34" (perl syntax, that's "1 2 U+672C 3 4").
cerebro ~# 12本34
^
cursor is marked with ^. Moving the cursor to the left successively gives:
cerebro ~# 12本34
^
cerebro ~# 12本34
^
cerebro ~# 12本34
^ # jumped one chaarcter too far
cerebro ~# 12本34
^
cerebro ~# 12本34
^ # one character left to the left margin
As you can see, the cursor jumps over the 本, and I can even go one
step further to the left than my original prompt (which ends with a
space). Backspace acts the same: for every double-wide character, I get
one cell further to the left, and backspacing a double-wide character
erases the character itself and one more character to the left.
With bash-2.05b and an otherwise identical system the cursor correctly
moves on top of the 本 and is displayed properly, editing works
correctly.
While this manifests most easily with double-wide characters I have
the impression that high characters in general are a problem for bash,
as I think that I have this behaviour sometimes when entering other
unicode characters, but I cna only easily reproduce it with double-width characters.
-- System Information:
Debian Release: 3.1
APT prefers testing
APT policy: (700, 'testing'), (500, 'unstable'), (1, 'experimental') Architecture: i386 (i686)
Kernel: Linux 2.6.6
Locale: LANG=C, LC_CTYPE=de_DE.UTF-8
Versions of packages bash depends on:
ii base-files 3.1 Debian base system miscellaneous f hi libc6 2.3.2.ds1-11 GNU C Library: Shared libraries an ii libncurses5 5.4-4 Shared libraries for terminal hand ii passwd 1:4.0.3-30 Change and administer password and
-- no debconf information
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* Origin: you cannot sedate... all the things you hate (1:229/2)