Public bug reported:

I'm not entirely sure this isn't a bug with bash, instead of gnome-
terminal.

Full-width character, followed by at least one full word with a space
after it.

Example: あa a

With trailing space.

Typing before the full-width character causes the 'あ' to be pushed to
next line, with a blank space on previous line though if selected and
copied it will actually produce a space.

The 'あ' occupies two columns on the new line, but characters after the
first a are only moved one column to the right. The first a, or the
first character after the 'あ' including a space, is pushed two columns
to the right, covering the second character after the 'あ'.

A similar bug occurs when deleting characters before the 'あ', except no
trailing space is required. A character is duplicated but might be first
letter of first word on second line, or last letter of next word.
Duplicating one letter as soon as 'あ' goes to previous line is easy to
replicate; duplicating other letters as further characters before 'あ'
are deleted might only happen after resetting the line using up arrow
then down arrow, but actually just because of forward bug because
displayed characters change after pressing up then down. Second word on
line only seems to be affected if no other words after it.

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: gnome-terminal 3.6.2-0ubuntu1
ProcVersionSignature: Ubuntu 3.16.0-30.40-generic 3.16.7-ckt3
Uname: Linux 3.16.0-30-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.7-0ubuntu8.2
Architecture: amd64
CurrentDesktop: Unity
Date: Tue Apr 14 02:37:03 2015
SourcePackage: gnome-terminal
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: gnome-terminal (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug utopic

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https://bugs.launchpad.net/bugs/1443852

Title:
  Display bug for editing lines with full-width characters

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