Please describe the problem:
Typing a combining dagesh, at least when the terminal is in en_US.UTF-8 mode, scoots the cursor ahead and prevents it from backspacing over text that was entered.

Steps to reproduce:
1. Open a gnome-terminal instance using en_US.UTF-8 encoding.
2. Enter U+05D1 U+05BC (Hebrew letter bet with combining dagesh) using CTRL-SHIFT and the Unicode code point in hex. The characters will not combine correctly; there will appear to be a bet followed by a center-dot.
3. Hit backspace; the center-dot will vanish.
4. Hit backspace again; the bet will not vanish.
5. Hit enter to reveal that the prompt was empty; the character displayed was not actually entered.


Actual results:
The Hebrew letter bet character cannot be backspaced over.

Expected results:
Either backspacing once should remove both the bet and the combining dagesh, or backspacing once should remove the dagesh, then backspacing again should remove the bet. Either way, characters that are removed from the prompt should no longer appear there.

Does this happen every time?
Yes; this is reproducible.

Other information:
I'm running gnome-terminal 2.14.2-0ubuntu1 on Ubuntu Dapper. The reportbug output follows.

-- System Information:
Debian Release: testing/unstable
  APT prefers dapper-updates
  APT policy: (500, 'dapper-updates'), (500, 'dapper-security'), (500, 'dapper')
Architecture: i386 (i686)
Shell:  /bin/sh linked to /bin/bash
Kernel: Linux 2.6.15-28-386
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)

Versions of packages gnome-terminal depends on:
ii  gnome-control-center  1:2.14.2-0ubuntu1  utilities to configure the GNOME d
ii  gnome-terminal-data   2.14.2-0ubuntu1    Data files for the GNOME terminal
ii  libatk1.0-0           1.11.4-0ubuntu1    The ATK accessibility toolkit
ii  libbonobo2-0          2.14.0-0ubuntu2    Bonobo CORBA interfaces library
ii  libc6                 2.3.6-0ubuntu20.5  GNU C Library: Shared libraries an
ii  libgconf2-4           2.14.0-1ubuntu2    GNOME configuration database syste
ii  libglade2-0           1:2.5.1-2ubuntu2   library to load .glade files at ru
ii  libglib2.0-0          2.10.3-0ubuntu1    The GLib library of C routines
ii  libgnome2-0           2.14.1-0ubuntu2    The GNOME 2 library - runtime file
ii  libgnomeui-0          2.14.1-0ubuntu3    The GNOME 2 libraries (User Interf
ii  libgnomevfs2-0        2.14.2-0ubuntu1    GNOME virtual file-system (runtime
ii  libgtk2.0-0           2.8.20-0ubuntu1.1  The GTK+ graphical user interface
ii  liblaunchpad-integrat 0.1.3              library for launchpad integration
ii  liborbit2             1:2.14.0-0ubuntu1  libraries for ORBit2 - a CORBA ORB
ii  libpango1.0-0         1.12.3-0ubuntu3    Layout and rendering of internatio
ii  libpopt0              1.7-5              lib for parsing cmdline parameters
ii  libstartup-notificati 0.8-1ubuntu1       library for program launch feedbac
ii  libvte4               1:0.12.2-0ubuntu1  Terminal emulator widget for GTK+
ii  libx11-6              2:1.0.0-0ubuntu9.1 X11 client-side library
ii  libxrender1           1:0.9.0.2-0ubuntu2 X Rendering Extension client libra
ii  scrollkeeper          0.3.14-11ubuntu6   A free electronic cataloging syste

Versions of packages gnome-terminal recommends:
ii  yelp                     2.14.3-0ubuntu1 Help browser for GNOME 2

-- no debconf information