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[Bug 1475718] [NEW] terminal-handling regression leads to ugly build logs

To: touch-packages@xxxxxxxxxxxxxxxxxxx
From: Adam Conrad <adconrad@xxxxxxx>
Date: Fri, 17 Jul 2015 16:01:46 -0000
Reply-to: Bug 1475718 <1475718@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

Public bug reported:

Since some time in vivid, apt's terminal handling changed to where (I
assume) it's now passing a controlling terminal to dpkg which, in turn,
means dpkg prints progress info when it didn't used to.  This leads to
log explosion with:

(Reading database ... 
(Reading database ... 5%
(Reading database ... 10%
(Reading database ... 15%
(Reading database ... 20%
(Reading database ... 25%
(Reading database ... 30%
[...]

For comparison, see a utopic log without the bug:

https://launchpadlibrarian.net/211733563/buildlog_ubuntu-utopic-
amd64.ibutils_1.5.7-3ubuntu0.1_BUILDING.txt.gz

And a vivid log with the bug:

https://launchpadlibrarian.net/211740299/buildlog_ubuntu-vivid-
amd64.ibutils_1.5.7-3ubuntu2_BUILDING.txt.gz

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

** Affects: apt (Ubuntu Vivid)
     Importance: Undecided
         Status: New

** Also affects: apt (Ubuntu Vivid)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1475718

Title:
  terminal-handling regression leads to ugly build logs

Status in apt package in Ubuntu:
  New
Status in apt source package in Vivid:
  New

Bug description:
  Since some time in vivid, apt's terminal handling changed to where (I
  assume) it's now passing a controlling terminal to dpkg which, in
  turn, means dpkg prints progress info when it didn't used to.  This
  leads to log explosion with:

  (Reading database ... 
  (Reading database ... 5%
  (Reading database ... 10%
  (Reading database ... 15%
  (Reading database ... 20%
  (Reading database ... 25%
  (Reading database ... 30%
  [...]

  For comparison, see a utopic log without the bug:

  https://launchpadlibrarian.net/211733563/buildlog_ubuntu-utopic-
  amd64.ibutils_1.5.7-3ubuntu0.1_BUILDING.txt.gz

  And a vivid log with the bug:

  https://launchpadlibrarian.net/211740299/buildlog_ubuntu-vivid-
  amd64.ibutils_1.5.7-3ubuntu2_BUILDING.txt.gz

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