I just opened a pull request that implements the requested feature.
https://github.com/matplotlib/matplotlib/pull/655
If you're familiar with Git, please test it and see if it works for your need.
I believe I will merge this PR to the master branch in a few days
unless there is any objection.
Re
Hi,
It seems that patheffects are not supported for Line2D objects currently
- only for Text and Patch objects. Is there any fundamental reason they
couldn't be extended to support Line2D objects? I'm interested in this
because I draw grid lines for some hammer projection plots and those
lines a
