doc: improves merge-tools example with an overwrite of existing config We highlight the fact that a user hgrc can overwrite the system wide preconfiguration. As other benefit we show priority value other than 1 and shows vimdiff configuration is usually directly available. This is valuable as vimdiff is (surprisingly) a common request from user.

help: add additional information in the merge-tools section of config help The merge tool configuration in general has always been a confusing topic for user. We add mention of: - possible pre-existing configuration, - way to look at it, - the more detailed help topic about how merge-tools configuration works. This should help users find they way.

subrepo: use subrepo shortid method to generate subrepo diverged promptchoice We were always using only the first 12 characters of the subrepo revision id when generating the "subrepo diverged" promptchoice. This is not necessarily correct for non mercurial subrepos.

subrepo: add shortid() method to subrepo classes This method takes an "id" (e.g. a revision id) and returns a "short" version (e.g. a short revision id). This will be used on the next revision to fix a small bug in the way that the text on the promptchoice shown when a subrepo diverges is generated.

localrepo: call _dirstatestatus instead of duplicating logic

workingctx: call _dirstatestatus in status Rip out the call from workingctx.status to localrepo.status.

context: add private _dirstatestatus method This patch is a step forward in getting rid of needing to check 'parentworking' throughout the status method. Eventually, we will use the power of inheritance to do the correct thing when comparing the working directory with its parent. This method is mostly a copy from localrepo.status. The custom status method of workingctx will eventually be absorbed by the refactoring of localrepo.status to context.status but unfortunately we can't do it in one step.

committablectx: move status to workingctx This method was accidentally placed into the committablectx class. It contains logic for querying the dirstate so we move it to the correct class.

localrepo: factor out parentworking logic for comparing files We will temporarily call a private method of the context class while we are in the process of removing the need of having localrepo.status.

localrepo: improve dirstate.normal lookup by cacheing the function

localrepo: move symlink logic to workingctx

merge: separate worker functions for batch remove and batch get The old code had one function that could do 2 different things. First, is was called a bunch of times to do one thing. Next, it was called a bunch of times to do the other thing. That gave unnecessary complexity and a dispatch overhead. Having separate functions is "obviously" better than having a function that can do two things, depending on its parameters. It also prepares the code for the next refactorings.

merge: change debug logging - test output changes but no real changes Preparing for action list split-up, making sure the final change don't have any test changes. The patch moves debug statements around without really changing anything. Arguably, it temporarily makes the code worse. The only justification is that it makes it easier to review the test changes ... and in the end the big change will not change test output at all. The changes to test output are due to changes in the ordering of debug output. That is mainly because we now do the debug logging for files when we actually process them. Files are also processed in a slightly different but still correct order. It is now primarily ordered by action type, secondarily by filename. The patch introduces some redundancy. Some of it will be removed again, some of it will in the end help code readability and efficiency. It is possible that we later on could introduce a "process this action list and do some logging and progress reporting and apply this function". The "preserving X for resolve" debug statements will only have single space indentation. It will no longer have a leading single space indented "f: msg -> m" message. Having this message double indented would thus no longer make sense. The bid actions will temporarily be sorted using a custom sort key that happens to match the sort order the simplified code will have in the end.

merge: move constant assignments a bit and use them more

merge: change priority / ordering of merge actions The ordering of actions matters. Normal file system semantics is that files have to be removed before a directory with the same name can be created. Before the first ordering key was to have 'r' and 'f' actions come first, secondary key was the filename. Because of future refactorings we want to consistently have all action types (with a sensible priority) as separate first keys. Grouped by action type, we sort by filename. Not processing in strict filename order could give worse performance, especially on spinning disks. That is however primarily an issue in the cases where "all" actions are of the same kind and will be grouped together anyway.

run-tests: fix --interactive option ``TTest._testpath`` never existed. This must be the remain of some contributors side refactoring.