show: use revlog function to compute length of the longest shortest node As the core part of shortest() was extracted at 448725a2ef73, we no logner need a templater.

commands: use the new API to access hidden changesets in various commands In previous patches, we have added an internal API to unhide hidden changesets. This patch makes the following command use that api in nowarn mode i.e. there will be no warning while accessing hidden changesets. cat, diff, export, files, heads, identify, log, manifest, parents, status This patch also adds test demonstarting the behaviour. .. feature:: Accessing hidden changesets Set config option 'experimental.directaccess = True' to access hidden changesets from read only commands. Differential Revision: https://phab.mercurial-scm.org/D1735

scmutil: add utility fn to return repo object with user passed revs unhidden There has been a need for accessing hidden changesets by default without passing --hidden. This is currently done using the directaccess extension but is bit hacky. This patch adds a utility function to return a repo object having user passed revisions unhidden. This functionality will live behind a config option and won't be the default behaviour. There is also a config option added by this patch which tells whether we want to unhide only those revisions whose hashes are passed or should we consider revisions numbers also. Differential Revision: https://phab.mercurial-scm.org/D1733

repoview: add a new filtername for accessing hidden commits This patch adds a new filter 'visible-hidden' for repository and will be used to return a repo object with user passed revisions unhidden. Unlike the directaccess extension in fb-hgext and previous series adding the functionality, this time we introduce only one new filter as whether to warn user or not is handled by scmutil.unhidehashlikerevs(). Differential Revision: https://phab.mercurial-scm.org/D1734

revsetlang: add utility function to return hash like symbols from the tree Functionalities like unhiding changesets whose rev/hash is passed by the user required the knowledge of rev/hashes in the user provided specs. This patch adds functions which can parse tree object and return a list of such values. Differential Revision: https://phab.mercurial-scm.org/D1732

repoview: add visibilityexception argument to filterrevs() and related fns After this patch, filterrevs() can take an optional argument visibilityexceptions which is a set of revs which should be exception to being hidden. The visibilityexceptions will be passed to the function computing hidden revisions for that filtername and are considered there while calculating the set of hidden revs. Differential Revision: https://phab.mercurial-scm.org/D1747

repoview: add visibilityexceptions as an optional argument to repo.filtered() This will help us in having an API where we can pass the filtername and the visibilityexceptions to get a new repo object. Visibility exceptions are the revs which must be visible even they should in theory belong to the hidden set. They are required as there has been desire to have a functionality to access hidden changesets using certain commands without passing --hidden. After this patch we can make those changesets visibility exceptions so that we can access them without requiring a unfiltered repo. Differential Revision: https://phab.mercurial-scm.org/D1746

streamclone: move wire protocol status code from wireproto command This consolidates the code for the streaming clone wire protocol format into streamclone.py. It also eliminates a generator wrapper, which might make streaming clones slightly faster. Differential Revision: https://phab.mercurial-scm.org/D1754

histedit: add ui.log for action count Differential Revision: https://phab.mercurial-scm.org/D1751

run-tests: extract sorting of tests to own function TestRunner._run() is a large function and is difficult to follow. Let's extract the test sorting to its own function to make it shorter. When I refactored run-tests.py several years ago, I put a lot of functionality in methods. The prevailing Mercurial style is to use functions - not classes - where possible. While refactoring the code, I decided to undo this historical mistake of mine by moving the code to a standalone function. Differential Revision: https://phab.mercurial-scm.org/D1750

run-tests: remove dead code related to temp directory Differential Revision: https://phab.mercurial-scm.org/D1749

rebase: switch ui.log calls to common style The old style raised errors in some cases. Differential Revision: https://phab.mercurial-scm.org/D1748

hgweb: link to successors of obsoleted changesets _siblings() prepare various useful properties to use in templates. This function usually prepares parents and children of changesets for use in hgweb templates, but it can be used for successors too. It's needed because item['successors'] is a _hybrid object that works well when used in regular templates, but in hgweb templates work slightly differently and can't get hex nodes of the successors, which are required for these links to work.

hgweb: display fate of obsolete changesets Operations that obsolete changesets store enough metadata to explain what happened after the fact. One way to get that metadata is showsuccsandmarkers function, which returns a list of successors of a particular changeset and appropriate obsolescence markers. Templates have a set of experimental functions that have names starting with obsfate. This patch uses some of these functions to interpret output of succsandmarkers() and produce human-friendly messages that describe what happened to an obsolete changeset, e.g. "pruned" or "rewritten as 6:3de5eca88c00". In commonentry(), succsandmarkers property is made callable so it's only executed on demand; this saves time when changeset is not obsolete, and also in e.g. /shortlog view, where there are a lot of changesets, but we don't need to show each and every one in detail. In spartan theme, succsandmarkers is used instead of the simple "obsolete: yes", in other themes a new line is added to /rev page.

test-ssh: stabilize for Windows Previously, this complained: remote: '.' is not recognized as an internal or external command, remote: operable program or batch file. Making this a python script apparently revealed some races[1]. Thanks to Yuya for suggesting this. [1] https://www.mercurial-scm.org/pipermail/mercurial-devel/2017-December/109094.html

templater: register keywords to defaults table Since the keywords are permanent, there should be no need to pass them by a temporary mapping.