log: do not accept string-matcher pattern as -u/-b/-B parameter I'm pretty sure this is a bug introduced after we've switched the filtering backend to revset matcher.

log: do not override other filtering and sorting options by --bookmark This basically reimplements 0aa118f18d4b 'log: add bookmark option to "hg log"'. Before, any other filtering options but --rev were ignored. -G didn't work either since the ordering constraint wasn't enforced.

scmutil: extract function that builds revset expr to select bookmark branch This is needed to process "log -B" option properly. "log" options have to be translated to a revset expression, not to an evaluated set.

scmutil: document that bookmarkrevs() ignores non-head bookmark branch "- ancestors(head() and not bookmark(%s))" excludes the bookmarked branch itself if bookmark(%s) is not a head. I'm a bit surprised by this behavior while writing "log -B" tests, so let's document it.