[Bug 1568394] [NEW] Carriage return handling in upgrader terminal

[Ian Turner]

Public bug reported:

Carriage return (\r) output from apt/dpkg is not correctly displayed in
the upgrader terminal. This results in output like this:

Extracting templates from packages: 2%Extracting templates from
packages: 5%Extracting templates from packages: 8%Extracting templates
from packages: 11%Extracting templates from packages: 14%Extracting
templates from packages: 17%Extracting templates from packages:
20%Extracting templates from packages: 23%Extracting templates from
packages: 26%Extracting templates from packages: 29%Extracting templates
from packages: 32%Extracting templates from packages: 35%Extracting
templates from packages: 37%Extracting templates from packages:
40%Extracting templates from packages: 43%Extracting templates from
packages: 46%Extracting templates from packages: 49%Extracting templates
from packages: 52%Extracting templates from packages: 55%Extracting
templates from packages: 58%Extracting templates from packages:
61%Extracting templates from packages: 64%Extracting templates from
packages: 67%Extracting templates from packages: 70%Extracting templates
from packages: 72%Extracting templates from packages: 75%Extracting
templates from packages: 78%Extracting templates from packages:
81%Extracting templates from packages: 84%Extracting templates from
packages: 87%Extracting templates from packages: 90%Extracting templates
from packages: 93%Extracting templates from packages: 96%Extracting
templates from packages: 99%

** Affects: ubuntu-release-upgrader (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1568394

Title:
  Carriage return handling in upgrader terminal

Status in ubuntu-release-upgrader package in Ubuntu:
  New

Bug description:
  Carriage return (\r) output from apt/dpkg is not correctly displayed
  in the upgrader terminal. This results in output like this:

  Extracting templates from packages: 2%Extracting templates from
  packages: 5%Extracting templates from packages: 8%Extracting templates
  from packages: 11%Extracting templates from packages: 14%Extracting
  templates from packages: 17%Extracting templates from packages:
  20%Extracting templates from packages: 23%Extracting templates from
  packages: 26%Extracting templates from packages: 29%Extracting
  templates from packages: 32%Extracting templates from packages:
  35%Extracting templates from packages: 37%Extracting templates from
  packages: 40%Extracting templates from packages: 43%Extracting
  templates from packages: 46%Extracting templates from packages:
  49%Extracting templates from packages: 52%Extracting templates from
  packages: 55%Extracting templates from packages: 58%Extracting
  templates from packages: 61%Extracting templates from packages:
  64%Extracting templates from packages: 67%Extracting templates from
  packages: 70%Extracting templates from packages: 72%Extracting
  templates from packages: 75%Extracting templates from packages:
  78%Extracting templates from packages: 81%Extracting templates from
  packages: 84%Extracting templates from packages: 87%Extracting
  templates from packages: 90%Extracting templates from packages:
  93%Extracting templates from packages: 96%Extracting templates from
  packages: 99%

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