Thanks for your comments, Martin.

I for one haven't considered extensive testing yet. The reason for the
proposal is to prevent a regression wrt Chinese rendering (due to new
default font), and we have a positive report from a Chinese user at bug
#1468027 (comment #105).

As regards your last question, no changes were made to debian/control,
so AFAICT going back to 2.11.1 if necessary would be easy.

The reporter of this bug report, Mingye Wang, has identified a bunch of
upstream commits (attached as patches to this bug report), and patching
2.11.1 with them *might* be an alternative to upgrading. We haven't
tested that approach successfully yet. However, given the number of
commits that would need to be cherry picked, I'm not sure it would be a
safer solution.

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You received this bug notification because you are a member of Ubuntu
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https://bugs.launchpad.net/bugs/1556457

Title:
  [FFe] Demilight (OS/2 weight=350) confuses fontconfig

Status in Fontconfig:
  Fix Released
Status in fontconfig package in Ubuntu:
  New
Status in fontconfig package in Arch Linux:
  New

Bug description:
  [FFe request comment]

  Upgrading to fontconfig 2.11.94 is proposed as a fix of this bug,
  including a fix of certain font weight issues due to the switch from
  fonts-droid to fonts-noto-cjk for Chinese (discussed at bug #1468027)
  where we haven't found any way to work around the problem.

  The proposed upload is available in this PPA:
  https://launchpad.net/~gunnarhj/+archive/ubuntu/fontconfig-test2

  Changes are listed in the attachment upstream_git-log.txt

  [Original description including updates]

  See https://bugs.freedesktop.org/show_bug.cgi?id=81453 and bug
  1468027.

  Fontconfig lacks support for many OpenType/TrueType OS/2 font weight
  values. This causes a bunch of problems, like mixing up Demilight
  (weight=350) and Regular (weight=400).

  Although it's possible to write (dirty?) hacks for deb-packed fonts,
  this still causes problems for otherwise sourced fonts.

  Archlinux: https://bugs.archlinux.org/task/48550 (fix released,
  upgraded to 2.11.94)

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