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Created attachment 8691945 [details] HTML document for testing. The first two cells are too wide. User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:42.0) Gecko/20100101 Firefox/42.0 Build ID: 20151029151421 Steps to reproduce: I created some MathML using AsciiMath.org that contains normal brackets for function parameters. Actual results: Brackets in <mo> tags cause the <math> tag to use somewhat more space than it actually needs. The table cell that contains the formula gets wider than expected. Expected results: The border of the cell that contains the formula should fit tightly.
Created attachment 8691946 [details] Screenshot of the test page. The area underlined in red is wrong.
Created attachment 8721763 [details] new sample document My MathML Competence is poor, but I think with help of <http://www.w3.org/TR/REC-MathML/chapter2.html> and <https://developer.mozilla.org/en-US/docs/Web/MathML/Element/mo> (and similar) I am able to reproduce the problem with unofficial (from <http://seamonkey.callek.net/contrib/>) en-US SeaMonkey 2.44a1 Mozilla/5.0 (Windows NT 6.1; x64; rv:47.0) Gecko/20100101 Firefox/47.0 Build 20160208090255 (Default Classic Theme) on German WIN7 64bit. Steeps how to reproduce and visible results in new sample document!
a) No DUPs found with <https://bugzilla.mozilla.org/buglist.cgi?cmdtype=dorem&remaction=run&namedcmd=DUPs1227957&sharer_id=41036> b) Effect also REPRODCIBLE with FF 47.0a1 (2016-02-12) c) Seems to be a regression, no extra space in formula with with SeaMonkey 2.5 (Windows NT 6.1; WOW64; rv:8.0.1) Gecko/20111121 Firefox/8.0.1 Build 20111121045514 (Classic Theme) on German WIN7 64bit
Status: UNCONFIRMED → NEW
Ever confirmed: true
OS: Unspecified → Windows
d) Also REPRODUCIBLE with English SeaMonkey 2.44a1 (X11; Linux x86_64; rv:47.0) Gecko/20100101 Firefox/47.0 Build 20160208023510 (Default Theme) on VirtualBox Ubuntu 14.04 LTS But the effect I see is smaller that with WIN c) I reproduce the effect with all kinds of brackets d) extra space right from formula in table cell becomes bigger and bigger the more brackets I insert into the formula e) there also seems to be a very small extra space at the right if I use <mo>+</mo>, but size of that extra extra place seesm not to depend of number or <mo></mo>
OS: Windows → All
Hardware: Unspecified → All
Summary: Incorrect width of MathML tag when using brackets in <mo> tags → MathML formula causes too big table cell width when using (also: curly) brackets or parenthesis in <mo> tags
Created attachment 8721767 [details] better new sample
Attachment #8721763 - Attachment is obsolete: true
Changes occur for attachment 8691945 [details]: https://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=b836d89be72b&tochange=0e91262606a6 Suspect: Bug 1000879 - Remove the ::-moz-math-stretchy pseudo-element.
Removing "regressionwindow-wanted" keyword because the pushlog was provided in comment 6.
Keywords: regressionwindow-wanted → regression
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