[Bug 1780501] Re: Traceback calling Vte.Terminal.feed_child()

[Brian Murray]

Calling Vte.Terminal.feed_child() with "n\n", -1 works fine with version
0.52.1-1ubuntu1 on Ubuntu 18.04 but using version in bionic-updates and
cosmic I receive the following Traceback:

In [10]: term.feed_child("n\n", -1)
---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
<ipython-input-10-aea6cb64c22b> in <module>()
----> 1 term.feed_child("n\n", -1)

TypeError: Vte.Terminal.feed_child() takes exactly 2 arguments (3 given)

In [11]:                                                                                                                                                       
Do you really want to exit ([y]/n)? y
[  8:10AM 10167 ]  [ bdmurray at impulse:~ ]
 $ apt-cache policy gir1.2-vte-2.91
gir1.2-vte-2.91:
  Installed: 0.52.2-1ubuntu1~18.04.1
  Candidate: 0.52.2-1ubuntu1~18.04.1
  Version table:
 *** 0.52.2-1ubuntu1~18.04.1 500
        500 http://192.168.10.7/ubuntu bionic-updates/main amd64 Packages


** Also affects: vte2.91 (Ubuntu)
   Importance: Undecided
       Status: New

** Changed in: vte2.91 (Ubuntu)
       Status: New => Triaged

** Changed in: vte2.91 (Ubuntu)
   Importance: Undecided => High

** Tags added: regression-update

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https://bugs.launchpad.net/bugs/1780501

Title:
  Traceback calling Vte.Terminal.feed_child()

Status in ubuntu-release-upgrader package in Ubuntu:
  Triaged
Status in vte2.91 package in Ubuntu:
  Triaged

Bug description:
  I was upgrading from Bionic to Cosmic when I received a conffile
  prompt regarding /etc/update-initramfs/initramfs.conf, I clicked keep
  and then saw this Traceback:

  Original exception was:
  Traceback (most recent call last):
    File "/tmp/ubuntu-release-upgrader-filpk342/cosmic", line 8, in <module>
      sys.exit(main())
    File "/tmp/ubuntu-release-upgrader-filpk342/DistUpgrade/DistUpgradeMain.py", line 238, in main
      if app.run():
    File "/tmp/ubuntu-release-upgrader-filpk342/DistUpgrade/DistUpgradeController.py", line 1949, in run
      return self.fullUpgrade()
    File "/tmp/ubuntu-release-upgrader-filpk342/DistUpgrade/DistUpgradeController.py", line 1912, in fullUpgrade
      if not self.doDistUpgrade():
    File "/tmp/ubuntu-release-upgrader-filpk342/DistUpgrade/DistUpgradeController.py", line 1248, in doDistUpgrade
      res = self.cache.commit(fprogress,iprogress)
    File "/tmp/ubuntu-release-upgrader-filpk342/DistUpgrade/DistUpgradeCache.py", line 293, in commit
      apt.Cache.commit(self, fprogress, iprogress)
    File "/usr/lib/python3/dist-packages/apt/cache.py", line 606, in commit
      pm = apt_pkg.PackageManager(self._depcache)
    File "/usr/lib/python3/dist-packages/apt/cache.py", line 569, in install_archives
      # compat with older API
    File "/tmp/ubuntu-release-upgrader-filpk342/DistUpgrade/DistUpgradeView.py", line 229, in run
      res = os.WEXITSTATUS(self.wait_child())
    File "/tmp/ubuntu-release-upgrader-filpk342/DistUpgrade/DistUpgradeViewGtk3.py", line 340, in wait_child
      self.update_interface()
    File "/tmp/ubuntu-release-upgrader-filpk342/DistUpgrade/DistUpgradeViewGtk3.py", line 347, in update_interface
      InstallProgress.update_interface(self)
    File "/usr/lib/python3/dist-packages/apt/progress/base.py", line 252, in update_interface
      if err.errno != errno.EAGAIN and err.errno != errno.EWOULDBLOCK:
    File "/tmp/ubuntu-release-upgrader-filpk342/DistUpgrade/DistUpgradeViewGtk3.py", line 276, in conffile
      self.term.feed_child("n\n", -1)
  TypeError: Vte.Terminal.feed_child() takes exactly 2 arguments (3 given)

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