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

[Fred-wang]

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 ]

[Fred-wang (fred-wang)]

FYI, more people reported this issue when reading Wikipedia pages on Ubuntu:

https://bugzilla.mozilla.org/show_bug.cgi?id=1220465#c2
https://phabricator.wikimedia.org/T122400

[Fred-wang (fred-wang)]

More bug reports from Wikipedia users:

http://askubuntu.com/questions/716016/firefox-wikipedia-mathml-equations-have-too-much-space-above-and-below
https://github.com/fred-wang/Mathzilla/issues/33

[Jérôme Kunegis (kunegis)]

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

[David Venhoek (t-dav0d-a)]

I can attest that this is (as of 29-06-2016) still an issue, and it makes mathematical reference material such as http://dlmf.nist.gov/10.6 somewhat annoying to read. a fix would be highly appreciated

For reference, this is on Ubuntu 14.04.4 LTS

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Mateus Araújo (iris-n)]

This bug is fixed from Xenial onwards. I changed the status to Fix Released.