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

[Łukasz Zemczak]

Oh my, and I was wondering why my irssi froze and was unresponsive a bit
back. Guess it was this bug!

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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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