[Bug 1322843] [NEW] foregrounding a sudo'd vim will sometimes break terminal state

[wdoekes]

Public bug reported:

See this bug:
http://www.sudo.ws/bugs/show_bug.cgi?id=649

Started on Ubuntu/Trusty since it has a sudo after 1.8.7, (precise has
1.8.3).

Steps to reproduce:

- take a local machine with a recent sudo (after 1.8.7)
- sudo vi
- ^Z (control-Z)
- fg
- repeat ^Z and fg until the fg fails and the screen is partially cleared
- now a second fg wil open vim with a broken terminal state:
  arrow keys will render the escape sequences and other nastiness

Fix is provided upstream, but author is currently figuring out why it
breaks.

Cheers,
Walter Doekes
OSSO B.V.

** Affects: sudo (Ubuntu)
     Importance: Undecided
         Status: New

** Patch added: "SUDO-649_minimal_fix.patch"
   https://bugs.launchpad.net/bugs/1322843/+attachment/4118864/+files/SUDO-649_minimal_fix.patch

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https://bugs.launchpad.net/bugs/1322843

Title:
  foregrounding a sudo'd vim will sometimes break terminal state

Status in “sudo” package in Ubuntu:
  New

Bug description:
  See this bug:
  http://www.sudo.ws/bugs/show_bug.cgi?id=649

  Started on Ubuntu/Trusty since it has a sudo after 1.8.7, (precise has
  1.8.3).

  Steps to reproduce:

  - take a local machine with a recent sudo (after 1.8.7)
  - sudo vi
  - ^Z (control-Z)
  - fg
  - repeat ^Z and fg until the fg fails and the screen is partially cleared
  - now a second fg wil open vim with a broken terminal state:
    arrow keys will render the escape sequences and other nastiness

  Fix is provided upstream, but author is currently figuring out why it
  breaks.

  Cheers,
  Walter Doekes
  OSSO B.V.

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