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Bug 35186 - MathJax: Several commands that work in texvc are not recognized
 Summary: MathJax: Several commands that work in texvc are not recognized
 Status: Product: ASSIGNED MediaWiki extensions Unclassified Component: Math (Other open bugs) unspecified All All Low normal with 1 vote (vote) --- Nobody - You can work on this! 70207 31406 make-mathjax-default Show dependency tree / graph

 Reported: 2012-03-13 08:56 UTC by Michael M. 2014-10-19 18:19 UTC (History) 11 users (show) chrkipping fred.wang gnosygnu hartman.wiki liangent mah mal.malego peter.krautzberger physik rich wikimedia.x.0x --- --- ---

Attachments

 Michael M. 2012-03-13 08:56:57 UTC I found these: \varcoppa, \sampi, \varstigma, \Digamma, \Sampi, \euro, \geneuro, \geneuronarrow, \geneurowide, \officialeuro, \arccot, \arcsec, \arccsc, \cancel, \bcancel, \xcancel, \cancelto Additionally, \color doesn't recognize all color names, at least not OliveGreen: { \color{OliveGreen} 1 } is black. Michael M. 2012-03-13 09:20:30 UTC For more colors, that don't work, see http://leuksman.com/mw/index.php/Help,_Formula#Color (at least one example where the help from en.wikipedia is better than that from de). Michael M. 2012-03-14 08:53:48 UTC The unrecognized colors are rendered black in Firefox 3.6, in IE 8 a [Math Processing Error] is displayed instead. Brion Vibber 2012-03-14 22:54:33 UTC Putting this on my list, these should be addable. Richard Morris 2012-03-15 00:50:04 UTC \arccot, \arcsec, \arccsc were solved in Nageh version by adding some macros. See http://en.wikipedia.org/wiki/User_talk:Nageh/mathJax#Missing_functions Michael M. 2012-03-17 08:30:07 UTC After a closer look at the sources: \color seems to be only a configuration issue, since there is MathJax/extensions/TeX/color.js. Probably you just have to mention it in MathJax/config/TeX-AMS-texvc_HTML.js next to the other extensions. The missing commands that can be emulated should go in MathJax/extensions/TeX/texvc.js. Richard Morris 2012-03-25 16:15:13 UTC $\dot \vec u$ works with tecvc but not with mathjax wihich only accepts the (correct) Latex $\dot{\vec u}$. There are a few similar bugs mentioned at http://en.wikipedia.org/w/index.php?title=User_talk:Nageh/mathJax including $$\hat \mathbf u$$, $$\underline \mathbb Z$$, $$\hat \boldsymbol \theta$$ Derk-Jan Hartman 2012-03-25 20:38:05 UTC Added the colors in https://gerrit.wikimedia.org/r/3723 Derk-Jan Hartman 2012-03-25 22:13:46 UTC Seems pagecolor is also not supported yet. Derk-Jan Hartman 2012-03-25 22:21:39 UTC \cancel, \bcancel, \xcancel, \cancelto can also be enabled by adding the extension to our config. Derk-Jan Hartman 2012-03-26 21:39:23 UTC \arccot, \arcsec, \arccsc: https://gerrit.wikimedia.org/r/3767 \cancel, \bcancel, \xcancel, \cancelto: https://gerrit.wikimedia.org/r/3768 Derk-Jan Hartman 2012-03-26 22:33:05 UTC Our defined symbols are smaller than the symbols from the AMS package due to different styling. Our symbols get font-family: STIXGeneral, 'Arial Unicode MS', serif; font-size: 85%; font-style: italic; font-weight: normal;, whereas AMS symbols only get font-family: MathJax_AMS; this will need fixing at some point. Michael M. 2012-03-28 08:58:20 UTC From source code I extracted lists of both the commands allowed in texvc and MathJax, and diffed them. I hope this is the complete list of commands still missing: AA Dagger Digamma emph euro geneuro geneuronarrow geneurowide H image officialeuro pagecolor Q sampi Sampi sen textsf texttt varcoppa varstigma vbox vline Derk-Jan Hartman 2012-04-01 14:16:03 UTC Added in https://gerrit.wikimedia.org/r/4060 \Dagger \Digamma \sampi \Sampi \varcoppa \varstigma \Q U+0051 doublestruck Q \H U+8461 doublestruck H \AA U+00C5 armstrong \sen spanish version of \sin (bug 18912) \image alias for \Im Still left: \euro \geneuro \geneuronarrow \geneurowide \officialeuro \pagecolor ignore Text instead of math formatting.. should we really include this ? \emph{} text emphasize (italics) \textsf{} text sans serif \texttt{} text typewriter \vbox{text} Encloses a paragraph's text to prevent it from running over a page break \vline draws a vertical line with the height of the row at the location where it appears nageh 2012-04-18 11:58:07 UTC \textsf{}, \texttt{} and \vline are implemented https://en.wikipedia.org/w/index.php?title=User%3ANageh%2FmathJax%2Fconfig%2FTeX-AMS-texvc_HTML.js&diff=486528289&oldid=485202027 here. \emph{}, while implemented as \textit{}, really shouldn't be supported because it is a text mode command and not a math mode command. The case with the euro symbols is a different one. The \gen* commands are supposed to be generated from the 'C' letter, meant to support symbols that more closely match the font style. However, it turns out that Unicode and font designers, instead of adopting the official euro symbol, have preferred a symbol that matches the font style. Which means that the euro symbol in the font set most closely resembles \geneuro. \officialeuro is not available in the fonts, unless a specific euro font file will be added to MathJax. \euro is a link to one of the other symbols; while set to \officialeuro by default I have linked it to \geneuro. nageh 2012-04-18 12:07:03 UTC This change, https://en.wikipedia.org/w/index.php?title=User%3ANageh%2FmathJax%2Fconfig%2FTeX-AMS-texvc_HTML.js&diff=486653054&oldid=486652453, adds the RGB color space so \definecolor does not fail anymore. This change, https://en.wikipedia.org/w/index.php?title=User%3ANageh%2FmathJax%2Fconfig%2FTeX-AMS-texvc_HTML.js&diff=486652319&oldid=486638683, removes the noErrors.js extension, which, don't ask me why I have included it. This change, https://en.wikipedia.org/w/index.php?title=User%3ANageh%2FmathJax%2Fconfig%2FTeX-AMS-texvc_HTML.js&diff=486638683&oldid=486528289, implements pretty perfect \oiint support for both HTML-CSS and MathML output, and admittedly a (still) imperfect implementation of \oiiint. I possibly would be good to directly rely on the font symbols when STIX fonts are detected. This change, https://en.wikipedia.org/w/index.php?title=User%3ANageh%2FmathJax%2Fconfig%2FTeX-AMS-texvc_HTML.js&diff=487586044&oldid=486653054, resolves an issue where the \scriptstyle hack, which is so common on Wikipedia to effect a normal font size, is used in boxed display maths. I have updated my documentation accordingly (here: https://en.wikipedia.org/wiki/User:Nageh/mathJax#Usage_notes). nageh 2012-04-18 12:11:44 UTC This change, https://en.wikipedia.org/w/index.php?title=User%3ANageh%2FmathJax.js&diff=484537614&oldid=484068957, supports mtextFontInherit for both HTML-CSS and MathML output. Someone has complained that the vertical margin for display maths is too large. This change, https://en.wikipedia.org/w/index.php?title=User%3ANageh%2FmathJax.js&diff=487684008&oldid=486653976, reduces that margin by a tiny bit. I think it pretty closely matches that of ordinary LaTeX. wikimedia.x.0x 2012-05-04 06:53:19 UTC So stuff like \texttt won't be supported? Should sites using these therefore be changed? Example: http://de.wikipedia.org/wiki/Lyndonwort nageh 2012-05-04 11:20:54 UTC Huh? \texttt is most likely to be supported as it can be trivially implemented. See comment 14. Richard Morris 2012-05-04 11:24:34 UTC As nageh has said \texttt \textsf and \emph can probably be fixed by adding MathJax.Hub.Config({ TeX: { Macros: { texttt: ['Macro','\\mathord{\\tt{\\text{#1}}}',1], textsf: ['Macro','\\mathord{\\sf{\\text{#1}}}',1], emph: ['Macro','\\textit{#1}',1], // doesn't switch to \textrm within italic text as it should } } } although I'm not sure if it works for doubly nested items (which don't actually work for \textbf{\textit{broken}} anyway). nageh 2012-05-04 20:48:50 UTC Oh? I didn't know that \text doesn't accept nested commands. I suppose this could be easily fixed by the MathJax devs. Do you want to file a bug report at https://github.com/mathjax/MathJax/ ? Should I file one on your behalf? Thanks. nageh 2012-05-05 11:44:23 UTC That should be https://github.com/mathjax/MathJax/issues . Richard Morris 2012-05-06 05:56:54 UTC Now not convinced \textbf{\textit{broken}} is broken I can't see anywhere in latex doc which say the \textfoo commands should nest. Only source which indicates it is seems to be http://en.wikibooks.org/wiki/LaTeX/Text_Formatting which isn't that reliable. nageh 2012-05-06 10:45:58 UTC Did you search on Google books? You could also try it yourself using your favorite LaTeX2e interpreter. \text* commands have been introduced in LaTeX(2e) over TeX for two reasons: old commands (\bf, \it, etc.) don't take a parameter so you always have to write {\bf text}; and they don't nest in contrast to \text*. nageh 2012-05-06 11:23:16 UTC CTAN is the definite web source for information on LaTeX and packages. You may want to read the top of page 124 of http://ctan.org/tex-archive/info/lshort/english/lshort.pdf nageh 2012-05-09 15:40:34 UTC Now reported at https://github.com/mathjax/MathJax/issues/243 . Liangent 2012-08-07 15:42:45 UTC \theta = 5^\operatorname{\omicron} This math code is problematic but I dunno which command is the cause. Richard Morris 2012-08-07 16:18:37 UTC An extra pair of curly brackets sorts it out. $\theta = 5^{\operatorname{\omicron}}$ works. MathJax is a bit more particular with precedence than texvc. Liangent 2012-08-07 16:28:33 UTC (In reply to comment #27) > An extra pair of curly brackets sorts it out. $\theta = > 5^{\operatorname{\omicron}}$ works. MathJax is a bit more particular > with precedence than texvc. This is still some inconsistency... Michael M. 2012-08-20 09:06:02 UTC (In reply to comment #27) > An extra pair of curly brackets sorts it out. $\theta = > 5^{\operatorname{\omicron}}$ works. MathJax is a bit more particular > with precedence than texvc. This is reported in bug 36534. Gerrit Notification Bot 2013-04-28 12:13:47 UTC Related URL: https://gerrit.wikimedia.org/r/61256 (Gerrit Change If6573901bafd8599a01979bcbff89e52b51e4ffd) Gerrit Notification Bot 2013-04-28 23:09:45 UTC Related URL: https://gerrit.wikimedia.org/r/61287 (Gerrit Change If38014bde908bb202dc63213fa21a72b52a6a42d) Derk-Jan Hartman 2013-04-28 23:18:14 UTC Still to do of things discussed in this ticket: Revive: https://gerrit.wikimedia.org/r/4060 the euro symbols \emph (only works if not in italics mode) \vbox https://en.wikipedia.org/w/index.php?title=User%3ANageh%2FmathJax.js&diff=484537614&oldid=484068957 Would like to know if it was intentional here that Nageh has changed the CSS to only affect MathML mtext elements (and no longer the HTML-CSS class .mtext) https://en.wikipedia.org/w/index.php?title=User%3ANageh%2FmathJax.js&diff=484537614&oldid=484068957 nageh 2013-04-30 13:08:30 UTC DJ, you are right in your assumption that "mtext" targets MathML elements rather than the standard HTML/CSS output. For the latter, the "mtextFontInherit" property is being used, which has become available since MathJax version 2.0. nageh 2013-04-30 13:43:46 UTC I shall add that the mtext font scaling to 80% is almost certainly not correct, however, if omitted Firefox does not adapt the font size to that of the surrounding text (which is scaled to 80% by default). As MathML support has become available on Chrome, which correctly implements the scaling, I would suggest removing that part from the mtext CSS definition, i.e., simply use styles: { "mtext": { "font-family": "sans-serif ! important" } } Peter Krautzberger 2013-04-30 15:12:19 UTC Hi nageh, MathJax can be configured to scale differently per browser. But it shouldn't have to be scaled at all (except for personal preference), so if you can produce a bug report, we'd appreciate it. https://github.com/mathjax/mathjax/issues Oh, also: Chrome is currently removing the MathML code in Blink; the Chrome devs have hinted at a complete re-write. So MathML in Chrome is probably dead for the foreseeable future. Peter. nageh 2013-04-30 16:08:32 UTC Hi Peter, thank you for your input. Yes, scaling should not be needed at all, and I was actually just going to suggest to ignore that custom styling altogether (there is no point in introducing something that breaks on one or the other browser). I will file a bug report. Interesting note on Chrome's MathML support. What a pity. nageh 2013-05-02 11:36:19 UTC As for \textsf and \texttt, these commands are correctly being defined but are missing styling support in the HTML/CSS output jax of TeX-AMS-texvc HTML.js when mtextFontInherit is being enabled. This is fixed by amending the source with matches for "monospace" and "sans-serif" font variants. In explanation, you'll find code statements like if(!j.weight&&j.mathvariant.match(/bold/)){j.weight="bold"} Replicate these for the other font variants. I may do so in my user script sources so you can copy the changes. But possibly this would be a useful change for the official MathJax sources as well... Peter, what do you think? Derk-Jan Hartman 2013-05-02 13:07:01 UTC Nageh, ah, I was wondering why \texttt and \textsf weren't working for me indeed. Derk-Jan Hartman 2013-05-02 14:08:09 UTC @Nageh, sounds like a follow up of https://github.com/mathjax/MathJax/issues/226 right ? that \sf \tt fontinherit issue ? nageh 2013-05-02 15:21:02 UTC Yes, indeed, the same solution is needed to fix \sf and \tt. Peter Krautzberger 2013-05-02 15:43:40 UTC yes, this sounds like a bug in MathJax. Derk-Jan Hartman 2013-05-14 07:47:05 UTC upstream: https://github.com/mathjax/MathJax/issues/459 Gerrit Notification Bot 2013-05-19 17:15:17 UTC https://gerrit.wikimedia.org/r/4060 (Gerrit Change I51a72c378d3496b147eb87418c24718026306c13) | change RESTORED [by TheDJ] Gerrit Notification Bot 2013-05-19 18:06:53 UTC Related URL: https://gerrit.wikimedia.org/r/64530 (Gerrit Change I20ac8af2253835c20431585d9caebe4066606879) Gerrit Notification Bot 2013-05-19 18:13:41 UTC Related URL: https://gerrit.wikimedia.org/r/64531 (Gerrit Change If2fb219a1191caeecb0ed04bf0c0105621725dce) physikerwelt 2013-10-22 19:17:10 UTC https://gerrit.wikimedia.org/r/#/c/90748/ This solves all the issues since it passes only real TeX to MathJax. I home someone will review this one day. I even wrote a guide how to verify the correctness of the change. http://www.formulasearchengine.com/Verify%20texvc%20light Even that did not help... Maybe I should add some wrong spacing so that potential reviewers find something to comment. Richard Morris 2014-03-11 14:13:41 UTC The treatment of \color is very different between the two versions. Looking at http://docs.mathjax.org/en/latest/tex.html#color we see "The \color command in the core TeX input jax is not standard in that it takes the mathematics to be colored as one of its parameters, whereas the LaTeX \color command is a switch that changes the color of everything that follows it." This means in texvc we have $foo \color{Red} Red text \color{Black} bar$ which breaks mathjax. You can fix things so that $foo {\color{Red}{Red text}} bar$ which seems to work with both mathjax and also texvc. Note it needs the text to be colored in { } so mathjax recognises the first argument, and also { } around the whole thing so texvc does not get confused. A further issue is the colors supported. LaTeX's colors are Apricot Aquamarine Bittersweet Black Blue BlueGreen BlueViolet BrickRed etc But MathJax only support colors with CSS names. So no Apricot, Bittersweet, BlueGreen or BrickRed. You can see the difference by viewing https://en.wikipedia.org/wiki/Help:Formula#Color with the different renderers. There is MathJax color.js extension. Which makes the color handling like the texvc and I think define latex rather than CSS colors. It might be worth installing. Derk-Jan Hartman 2014-04-05 16:09:48 UTC @Richard The color problems were introduced in late january: Bug 63574. It's just that nobody noticed until today. Please try to open separate tickets for separate issues. Link them with dependencies if you want to group them. nageh 2014-04-06 11:34:46 UTC Oddly enough it seems that I was the first to notice despite I'm not being active anymore. Gerrit Notification Bot 2014-10-12 15:13:01 UTC Change 4060 abandoned by Physikerwelt: Math: Adding archaic greek symbols from teubner set Reason: conserved in https://www.mediawiki.org/wiki/Extension:Math/Roadmap#Bugs_and_Roadmap_and_random_thoughts_.28From_the_discussion_page.29 feel free to restore if any development on that is planned https://gerrit.wikimedia.org/r/4060 physikerwelt 2014-10-19 18:18:30 UTC This should be fixed within MathJax. I discussed with Peter that we don't want to have a WMF specific version of MathJax to reduce the maintenance effort. See https://github.com/mathjax/MathJax/pull/882

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