[matplotlib-devel] pstest.py makes invalid PS, patch for backend_ps

[Fernando P. <Fer...@co...>]

Hi all,

I went through backend_ps picking out the low-hanging fruit. O(N^2) stuff, 
string += concatenations, unnecessary copies, stuff like that.  Here's a 
patch.  I tested it on a few small things and didn't really see much 
difference, so it would be good if you have a nasty PS to make (something with 
many thousands of line calls).   The diff is attached against CVS, I don't 
want to commit anything like this wihtout a bit of review/test from others.

In trying to test it, I also ran the supplied pstest.py in examples/, after 
uncommenting the savefig() call.  I noticed the generated postscript crashes 
gv.  This is not good.   I tested this bad-PS corruption both with my patch 
and with unmodified backend_ps, and it happens in both cases.  I don't really 
know what it could be.

Is there a set 	of tests I can use to check against, other than the examples/ dir?

Best,

f