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[Jérôme Kunegis <kunegis@xxxxxxxxx>]

I managed to fix the bug by hand on my Ubuntu installation by doing the
following:

* Download the latest version of the Latin Modern Math font from http://www.gust.org.pl/projects/e-foundry/lm-math 
* You get a zipfile, unpack it.  It contains documentation and a file 'latinmodern-math.otf'.  Copy that file to ~/.fonts (which you must create if it doesn't exist yet)
* Restart Firefox

I'm using:
Ubuntu 14.04
Firefox 43.0
The MathML-fonts 2.1.1-signed plugin in Firefox
The MathML Font Settings 0.2.1-signed plugin in Firefox

Jérôme

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to lmodern in Ubuntu.
https://bugs.launchpad.net/bugs/1502701

Title:
  The USE_TYPO_METRICS flag is not set in the OS/2 table of Latin Modern
  Math

Status in lmodern package in Ubuntu:
  New
Status in lmodern package in Debian:
  Fix Released

Bug description:
  Dear Maintainer,

  lmodern contains version 1.950 of the modern font. In this version,
  the USE_TYPO_METRICS flag is not set in the OS/2 table of Latin Modern
  Math, which can lead to excessive line spacing. See
  http://www.microsoft.com/typography/otspec/os2.htm#fss

  This bug is fixed upstream, please upgrade to version 1.959:
  http://www.gust.org.pl/gustnews/news02-05-10-2014en

  This bug is also fixed in Debian:
  https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=799731

  
  [ Rationale: Starting with Gecko 31, the typo metrics are used when either USE_TYPO_METRICS is set or the font contains a MATH table. However, starting with Gecko 43, it will only be used when USE_TYPO_METRICS is explicitly set:
  https://bugzilla.mozilla.org/show_bug.cgi?id=947650#c0
  https://bugzilla.mozilla.org/show_bug.cgi?id=1170782
  https://bugzilla.mozilla.org/show_bug.cgi?id=1208776#user_story_readonly  ]

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