In 7x13.bdf, U+2198 (8600) is drawn as an arrow going downward to the left, and
U+2199 (8601) as an arrow going downward to the right.
According to Unicode <URL: http://www.unicode.org/charts/PDF/U2190.pdf >, it
should be the opposite.
Sorry about the phenomenal bug spam, guys. Adding xorg-team@ to the QA contact so bugs don't get lost in future.
Thanks, just fixed in commit 19ec4053d83383cd3fd3e4dba2dd146f5386d8e6.