Bug 209693 - (linebreaksAroundMath) Bad line breaks before and after MathML insertions
 (linebreaksAroundMath) Summary: Bad line breaks before and after MathML insertions
 Status: NEW [see comment 13] Core Components MathML (show other bugs) Trunk All All P5 normal with 3 votes (vote) --- Nobody; OK to take it and work on it (view as bug list) line-breaking mathml-3 mathml-in-mathjax Show dependency tree / graph

Reported: 2003-06-17 13:41 PDT by Torsten Bronger
Modified: 2012-12-01 13:41 PST (History)
6 users (show)
Crash Signature:
(edit)
QA Whiteboard:
Iteration: ---
Points: ---
Has Regression Range: ---
Has STR: ---

Attachments
Testcase ... (613 bytes, application/xhtml+xml)
2004-06-27 11:14 PDT, Wolfgang Uhr
no flags Details
Test vertical alignement with stretchy ops (1.75 KB, application/xhtml+xml)
2009-10-16 14:14 PDT, Frédéric Wang (:fredw)
no flags Details
Updated Testcase (613 bytes, application/xhtml+xml)
2009-10-16 14:17 PDT, Frédéric Wang (:fredw)
no flags Details
Screenshot of the testcase (14.55 KB, image/png)
2009-10-16 14:18 PDT, Frédéric Wang (:fredw)
no flags Details
Updated testcase (594 bytes, application/xhtml+xml)
2009-10-20 12:22 PDT, Frédéric Wang (:fredw)
no flags Details
Testcase, with <math/> replaced by a <span/> (564 bytes, application/xhtml+xml)
2009-10-20 12:25 PDT, Frédéric Wang (:fredw)
no flags Details
Testcase (671 bytes, application/xhtml+xml)
2010-02-02 13:51 PST, Frédéric Wang (:fredw)
no flags Details
Expected result (Amaya) (17.19 KB, image/png)
2010-02-02 13:51 PST, Frédéric Wang (:fredw)
no flags Details

 Torsten Bronger 2003-06-17 13:41:02 PDT User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.1) Gecko/20020826 Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.1) Gecko/20020826 Theoretically, a x-Achse can be broken into two lines: the "x", and the "-Achse" Reproducible: Always Steps to Reproduce: Expected Results: The whole expression must be kept together. If non-whitespace is directly attached to the inline formula, the must not be any break between the non-whitespace and the formula. May be related to bug 172819. Wolfgang Uhr 2004-06-27 11:14:05 PDT Created attachment 151823 [details] Testcase ... This is a testcase which demonstrates, that this error has been solved. ... Gervase Markham [:gerv] 2005-09-27 02:06:15 PDT This is an automated message, with ID "auto-resolve01". This bug has had no comments for a long time. Statistically, we have found that bug reports that have not been confirmed by a second user after three months are highly unlikely to be the source of a fix to the code. While your input is very important to us, our resources are limited and so we are asking for your help in focussing our efforts. If you can still reproduce this problem in the latest version of the product (see below for how to obtain a copy) or, for feature requests, if it's not present in the latest version and you still believe we should implement it, please visit the URL of this bug (given at the top of this mail) and add a comment to that effect, giving more reproduction information if you have it. If it is not a problem any longer, you need take no action. If this bug is not changed in any way in the next two weeks, it will be automatically resolved. Thank you for your help in this matter. The latest beta releases can be obtained from: Firefox: http://www.mozilla.org/projects/firefox/ Thunderbird: http://www.mozilla.org/products/thunderbird/releases/1.5beta1.html Seamonkey: http://www.mozilla.org/projects/seamonkey/  Torsten Bronger 2005-09-27 04:14:53 PDT It's reproducible with Firefox 1.0.7, it's still a bug, it still should be fixed, and this is a stange method for finding bugs that are worth being fixed (whatever this means). Frédéric Wang (:fredw) 2009-10-16 14:14:39 PDT Created attachment 406778 [details] Test vertical alignement with stretchy ops In the case symmetric="false", I suppose the vertical bar should have its center aligned with the centers of red mspace's, but here the bottoms are aligned. Frédéric Wang (:fredw) 2009-10-16 14:17:37 PDT Created attachment 406781 [details] Updated Testcase Frédéric Wang (:fredw) 2009-10-16 14:18:36 PDT Created attachment 406782 [details] Screenshot of the testcase Frédéric Wang (:fredw) 2009-10-16 14:19:50 PDT (Please ignore comment 4) I attached an updated testcase and a screenshot that shows that the bug still happens. But is it really a bug? I've not checked what the spec says. Bruce Miller 2009-10-20 12:02:42 PDT This still happens in firefox 3.5.3 (fedora 11, x86_64). Is it a bug? Yes; the intent is that should act like any inline element; like a block element. The MathML 2 specification perhaps wasn't as explicit about this as it could have been, but we are hoping the MathML 3 spec (currently in last call) will be clearer. Frédéric Wang (:fredw) 2009-10-20 12:22:30 PDT Created attachment 407349 [details] Updated testcase Sorry, I previously attached the wrong file. Frédéric Wang (:fredw) 2009-10-20 12:25:07 PDT Created attachment 407350 [details] Testcase, with replaced by a  Frédéric Wang (:fredw) 2010-02-02 13:51:12 PST Created attachment 424860 [details] Testcase Frédéric Wang (:fredw) 2010-02-02 13:51:42 PST Created attachment 424861 [details] Expected result (Amaya) Frédéric Wang (:fredw) 2010-02-02 13:54:19 PST MathML3: "Moreover, when the math element is embedded in a larger document, a block math element should be treated as a block element as appropriate for the document type (typically as a new vertical block), whereas an inline math element should be treated as inline (typically exactly as if it were a sequence of words in normal text). In particular, this applies to spacing and linebreaking: for instance, there should not be spaces or line breaks inserted between inline math and any immediately following punctuation." Frédéric Wang (:fredw) 2010-02-02 13:55:19 PST *** Bug 422619 has been marked as a duplicate of this bug. *** Frédéric Wang (:fredw) 2010-03-12 10:36:16 PST BTW, another quite common situation is when the inline math is followed by a punctuation marks. For example a comma or a period can be moved at the beginning of a new line, which is really not expected. Matthew Cargo 2010-03-14 12:50:16 PDT Let me add some real cases, from the journal I work for: http://pjm.math.berkeley.edu/pjm/2010/244-2/p04.xhtml In Firefox that the renderer is inconsistent in deciding whether to break before or after a relational operator. In TeX, inline math breaks after. Also it allows breaks just before the argument of a function. Finally (a different bug), the delimiters in the displayed equation are sometimes ridiculously large. In http://pjm.math.berkeley.edu/pjm/2009/242-2/p02.xhtml one can see a break just _after_ a parenthesis. I would emphasize that the desired solution to this is _not_ to add additional tags in the mathml such as nobreak. Mathml is supposed to describe the math content, not how it is laid out. It is the browser's job to render it correctly. I assume this is possible in the cases above, because TeX is perfectly capable of choosing the correct breaks in (say) $(x+y)+z=x+(y+z)$ (with much less verbosity). Torsten Bronger 2010-03-14 13:08:02 PDT (In reply to comment #16) > Let me add some real cases, from the journal I work for: > > http://pjm.math.berkeley.edu/pjm/2010/244-2/p04.xhtml > > In Firefox that the renderer is inconsistent in deciding whether > to break before or after a relational operator. In TeX, inline math > breaks after. Also it allows breaks just before the argument of a > function. Finally (a different bug), the delimiters in the displayed > equation are sometimes ridiculously large. > > In > http://pjm.math.berkeley.edu/pjm/2009/242-2/p02.xhtml > one can see a break just _after_ a parenthesis. Okay, but this is another bug. What you desire is better line breaks *within* the inline MathML. This is probably even a very different place in the source code. Frédéric Wang (:fredw) 2010-03-14 14:54:38 PDT > Okay, but this is another bug. What you desire is better line breaks *within* > the inline MathML. This is probably even a very different place in the source > code. Right, this is what Matthew reported in bug 508120 (that I've just renamed to make clear it is about line break within MathML formulas)

 Note You need to log in before you can comment on or make changes to this bug.