[Bug 1882401] Re: ctrl+space freezes irssi on focal

[Launchpad Bug Tracker]

This bug was fixed in the package irssi - 1.2.2-1ubuntu1.1

---------------
irssi (1.2.2-1ubuntu1.1) focal; urgency=medium

  * debian/patches/1183.patch: manually handle NUL unicode in
    g_utf8_get_next_char_validated.  Thanks to ailin-nemui <ailin-
    nemui at users.noreply.github.com>.  Closes LP: #1882401.

 -- Steve Langasek <steve.langasek at ubuntu.com>  Thu, 06 Aug 2020
15:56:50 -0700

** Changed in: irssi (Ubuntu Focal)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1882401

Title:
  ctrl+space freezes irssi on focal

Status in irssi package in Ubuntu:
  Fix Released
Status in irssi source package in Focal:
  Fix Released

Bug description:
  [SRU Justification]
  pressing Ctrl+Space in an irssi window (whether intentionally or by accident) causes the application to freeze and it is not possible to un-freeze it.

  [Test case]
  1. Run irssi
  2. Type
  3. Press Ctrl+Space
  4. Try to type some more, observe that it doesn't work
  5. Kill irssi
  6. Upgrade to the package from -proposed
  7. Run irssi
  8. Type
  9. Press Ctrl+Space
  10. Type some more, observe that the characters appear.

  [Regression potential]
  This is a targeted patch that specifically detects the case that NUL is received in input as returned by new glib.  I don't see any way that this could cause regressions.

  [Original description]

  see https://github.com/irssi/irssi/issues/1180

  there is a patch available for this that needs to be applied to irssi
  for focal

  from GitHub issue:

  "A change in GLib 2.63 broke some assumptions in Irssi that the null-
  byte NUL / U+0000 is a valid Unicode character. This would occur when
  the user types Ctrl+Space. As a result, the input loop never manages
  to process the NUL-byte (and any other user input that follows, ever).

  This affects all versions of Irssi as soon as your system is updated
  to this GLib version."

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