status: introduce higher-level ui.relative-paths The existing commands.status.relative trumps the new config. We need to keep the existing config around for compatibility. However, I don't think we need to introduce similar command-specific options for other commands when they learn to respec ui.relative-paths. Differential Revision: https://phab.mercurial-scm.org/D5746

status: extract helper for producing relative or absolute path for UI I put the helper in scmutil so it can be used by most modules. I would have put it in utils.pathutil, but I think that's supposed to be unaware of repos. Differential Revision: https://phab.mercurial-scm.org/D5745

tags: avoid generating commit for an already deleted tag (issue5752) `$ hg tag --remove <tagname>` will keep on generating commits regardless of checking whether the tag is deleted or not. I added a a fix for `global` tags by aborting if `nullid` is already mapped to the tag that is to be deleted. Differential Revision: https://phab.mercurial-scm.org/D5780

watchman: detect nested mercurial repositories and abort Disable fsmonitor on nested mercurial repositories. Only depth one repositories are detected at the moment. Differential Revision: https://phab.mercurial-scm.org/D5587

watchman: add verbose config knob This new config knob allows to silent watchman log and warning messages when watchman is unavailable. Differential Revision: https://phab.mercurial-scm.org/D5586

extdiff: add --per-file and --confirm options The new options lets the user control how the external program is run. By default, Mercurial passes the 2 snapshot directories as usual, but it can also run the program repeatedly on each file's snapshot pair, and optionally prompt the user each time.