jsmath font broken in Firefox 3.5 on Linux

[mpatel]

In Firefox 3.5 on Linux, jsMath's cmmi10 font appears to be decoded improperly. Try this ​test. Other fonts seem fine.

See ​sage-devel for more.

[mpatel]

$SAGE_ROOT/local/notebook/javascript/jsmath/cmmi10.js

[mpatel]

Test worksheet.

[mpatel]

I've attached a preliminary workaround. Suggested directions:

• Save cmmi10.js as $SAGE_ROOT/local/notebook/javascript/jsmath/cmmi10.js
• Around line 1750 of $SAGE_ROOT/devel/sage/sage/server/notebook/notebook.py, replace

              head += '<script type="text/javascript" src="/javascript_local/jsmath/jsMath.js"></script>\n'
  

with

            head += '<script type="text/javascript" src="/javascript_local/jsmath/jsMath.js"></script>\n'
            head += '<script type="text/javascript">jsMath.Setup.UserEvent["pre-font"] = function () { jsMath.Setup.Script("cmmi10.js"); };</script>\n'

• sage -br
• Optional tests: Load and execute cmmi10.txt as a worksheet in the notebook.

This seems to work for me, but I haven't accounted for every character. Feel free to improve the code or tests!

[mpatel]

Note: This approach substitutes the font cmmi10 for jsMath-cmmi10, which, for some reason, Firefox 3.5 is unable to decode properly. It may help to check the system for cmmi10.ttf. The relevant Fedora 10 package is mathml-fonts.

Some Unicode links:

​Symbols

​UTF-8 conversion tool

​Index, search, categories

[mpatel]

That should be ​UTF-8 conversion tool.

[jason]

Davide has updated his fonts at ​http://www.math.union.edu/~dpvc/jsMath/download/jsMath-fonts.html to include a special one from Firefox 3.5 on Linux. I've been using his special font, and it seems to work great.

[jason]

I've also asked Davide of his opinion of this workaround, as compared to downloading the new font he created. I'll post here what he says if he does not post directly to sage-devel.

[mpatel]

Using the new font, I think, is a much better solution. I view the workaround mainly as a byproduct of trying to learn a bit more about how jsMath works. Its modular design and lazy-loading feature, in particular, could be useful examples for other projects. Then again, I'm more of a library user than a writer.

Please feel free to close this ticket.

[jason]

Can someone invalidate this ticket? I apparently don't have permissions to close it.

[mvngu]

Closing this as invalid. Use the latest jsMath fonts from ​http://www.math.union.edu/~dpvc/jsMath/download/jsMath-fonts.html.