convert: replace cache of (m,a,r) by (ma,r) The next commit will rewrite the way we find changes between two manifests. By making the cache not care about the difference between added and modified files, we don't require the rewritten code to care about that difference either. Also extract the call to ctx.status() to simplify the next commit.

convert: use _ prefix for private methods in hg sink This makes it clearer which methods are part of the interface defined by the superclass.

children: update help with replacement

graphlog: update help with replacement

histedit: clarify modes also fix terse command syntax

histedit: explain basics of histedit commands This should be hooked into @action via an extended help argument, but that is future work.

histedit: report the unacceptable changeset

mdiff: don't emit a diff header for empty trivial deltas An empty trivial delta, coded as (0, 0, 0) makes the delta application do nothing, but still takes 12 bytes, while skipping it altogether works as much, without taking any space at all.

commands: get rid of empty try/finally block from _dograft This diff is purely an indentation change to clean up a block that was kept in place to make 77995317b374 easier to read.

commands: get rid of empty try/finally block from _dobackout This diff is purely an indentation change to clean up a block that was kept in place to make c7217f1458bf easier to read.