convert: register missed subversion config items Should fix the build failures on the Solaris builders. Differential Revision: https://phab.mercurial-scm.org/D1180

amend: error out if the note is greater than 255bytes In obsmarker we can't store keys and values of more than 255 bytes in metadata. If we try to do so, ProgrammingError is raised. The note flag to amend stores the note in obsmetadata. If a user will try to store a larger note, he will encounter ProgrammingError which is wrong. We must error out early. Thanks to Yuya for warning about this. Differential Revision: https://phab.mercurial-scm.org/D1179

show: move configitems to core chgserver.py is also checking the config and will get: devel-warn: accessing unregistered config item: 'commands.show.aliasprefix' at: mercurial/chgserver.py:109 if the config is not registered. Differential Revision: https://phab.mercurial-scm.org/D1178

chgserver: do not treat HG as sensitive environ when CHGHG is set When `$CHGHG` is set, `$HG` is ignored by the chg client. Removing it from chg's sensitive environment list would avoid starting up servers unnecessarily when `$CHGHG` is the same while `$HG` is different. Differential Revision: https://phab.mercurial-scm.org/D1177

fsmonitor: declare missing config options These were added in 4aa57627692a. Attempting to run the test harness with fsmonitor enabled spews a whole bunch of devel warnings due to these options not be declared. Differential Revision: https://phab.mercurial-scm.org/D1176

fsmonitor: warn when fsmonitor could be used fsmonitor can significantly speed up operations on large working directories. But fsmonitor isn't enabled by default, so naive users may not realize there is a potential to make Mercurial faster. This commit introduces a warning to working directory updates when fsmonitor could be used. The following conditions must be met: * Working directory is previously empty * New working directory adds >= N files (currently 50,000) * Running on Linux or MacOS * fsmonitor not enabled * Warning not disabled via config override Because of the empty working directory restriction, most users will only see this warning during `hg clone` (assuming very few users actually do an `hg up null`). The addition of a warning may be considered a BC change. However, clone has printed warnings before. Until recently, Mercurial printed a warning with the server's certificate fingerprint when it wasn't explicitly trusted for example. The warning goes to stderr. So it shouldn't interfere with scripts parsing meaningful output. The OS restriction was on the advice of Facebook engineers, who only feel confident with watchman's stability on the supported platforms. .. feature:: Print warning when fsmonitor isn't being used on a large repository Differential Revision: https://phab.mercurial-scm.org/D894

merge: additional test cases to show merge-halting behavior In the previous patches, we allowed the user to specify that a merge process should be halted when a filemerge fails. This patch adds tests that show additional places this logic can be utilized -- via the options to do additional post-filemerge checks to determine if a file merge was successful. Differential Revision: https://phab.mercurial-scm.org/D952

rebase: add support to output nodechanges This patch adds support to rebase to show the changes in node once the rebase is complete. This will be extremely helpful for automation purposes and editors such as Nuclide. The output is a dictionary of predecessor hash as key and a list of successors' hashes. The successors one is a list as there can be many successors for a single predecessor in case of split and it will good to have a generic output format. This patch adds tests for the same. A new file is created for the patch as existing files related to rebase has their own purpose and there will be more formatter support coming for rebase in next cycle. Thanks to Jun for suggesting to use fm.data(). Differential Revision: https://phab.mercurial-scm.org/D1173

ui: move request exit handlers to global state Since the ui objects can be created with the 'load' class method, it is possible to lose the exit handlers information from the old ui instance. For example, running 'test-bad-extension.t' leads to this situation where chg creates a new ui instance which does not copy the exit handlers from the earlier ui instance. For exit handlers, which are special cases anyways, it probably makes sense to have a global state of the handlers. This would ensure that the exit handlers registered once are definitely executed at the end of the request. Test Plan: Ran all the tests without '--chg' option. This also fixes the 'test-bad-extension.t' with the '--chg' option. Differential Revision: https://phab.mercurial-scm.org/D1166

sparse-read: skip gaps too small to be worth splitting Splitting at too small gaps might not be worthwhile. With this changeset, we stop considering splitting on too small gaps. The threshold is configurable. We arbitrarily pick 256K as a default value because it seems "okay". Further testing on various repositories and setups will be needed to tune it. The option name is 'experimental.sparse-read.min-gap-size`, and replaces `experimental.sparse-read.min-block-size` which is not used any more.