Managing fonts

Example: When I create an xkcd-style plot using PyPlot.jl (see https://gist.github.com/cmundi/9041366) in a _fresh_ session of IJulia, I get this error:

/usr/local/lib/python2.7/dist-packages/matplotlib-1.3.1-py2.7-linux-x86_64.egg/matplotlib/font_manager.py:1236: UserWarning: findfont: Font family ['Humor Sans', 'Comic Sans MS'] not found. Falling back to Bitstream Vera Sans
(prop.get_family(), self.defaultFamily[fontext]))

Ok, so matplotlib apparently cannot find the Comic Sans font. That makes sense, because I don't see that font in /usr/share/fonts/truetype. But hold on a second! If I run the usual examples of xkcd in IPython (not IJulia) the comic sans fonts render in the plots -- no problem! Just for fun I installed the MS fonts which include Comic_Sans_MS.ttf and rebuilt the cache with

fc-cache -rv

which picked up the new fonts. Started a new session of IJulia and... no comic sans for xkcd... still gives me the fallback sans serif fonts.

I would say this is a font config problem (with IPython finding Comic Sans and IJulia not finding it) but that seems strange since PyPlot.jl is a wrapper around matplotlib. Any ideas?

Yes, I know, I should be making a useful contribution to society instead of worrying about xkcd. :)

Thanks.

Start with the xkcd-style PyPlot.jl example and compare font discovery between a fresh IJulia session and IPython, using the reported matplotlib warning and fc-cache behavior as the baseline. Done means the same installed Comic Sans font is discovered and rendered in IJulia without falling back to Bitstream Vera Sans.

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