Okay, you wanted nits, you got 'em: The left hand side of this example (the image) renders the radicals so as to keep the vertical spacing between bars uniform. The MathML version is not uniform in this vertical spacing. Also, the right-side ends of these bars do not line up. I noticed this, but needed to magnify to confirm.

TeX seems to try to keep the vertical spacing uniform, while Mozilla is trying to keep the bottom of the radical glyphs uniform. See, e.g., attachment 90346 [details] from bug 121493. Which way do you prefer?

Cc:ing roc+moz/waterson for r/sr

The patch only concentrate on the vertical stacking. Getting neat horizontal widths for the rule of the radical also depend on how well frames align on pixel boundaries -- it is too complex/unreliable to have a fix for that part, and so will remain as such.

Comment on attachment 90910 [details] [diff] [review] patch to beautify the rendering r=roc+moz

Comment on attachment 90910 [details] [diff] [review] patch to beautify the rendering sr=waterson

Comment on attachment 90910 [details] [diff] [review] patch to beautify the rendering a=asa (on behalf of drivers) for checkin to the 1.1 trunk.

checked on the trunk