I've just committed a set of m4 changes that let autoconf 2.62 run on OpenBSD, and pass most of its testsuite (the tests that don't pass are only off-by-one differences in tracing output line numbers).
This completes the stuff I committed a few days ago, which fixes a long-standing bug in our m4 (erroneous swallow of blank spaces within parentheses) that was tweaking autoconf output a wee little bit. This is something of a stupid battle, but proving that you don't need gnu-m4, that our m4 is good enough for autoconf, is something I want. (And besides, autoconf is a very nasty testsuite for m4)
