configitems: fixup default value of annotate config option It turned out that configbool is used for most of them so the registered default value was wrong.

transaction-summary: use a revset to filter obsoletes in reportnewcs() Thanks to Yuya Nishihara for suggesting.

releasenotes: add pager support when printing to the ui Differential Revision: https://phab.mercurial-scm.org/D1098

configitems: fixup default value of diff config option It turned out that configbool is used for most of them so the registered default value was wrong.

devel-warn: add 'warn-' to 'devel.empty-changegroup' config Rename 'devel.empty-changegroup' to 'devel.warn-empty- changegroup' in order to clarify it controls a warning message. No alias is installed since the previous configuration option was not documented.

peer: ensure command names are always ascii bytestrs Differential Revision: https://phab.mercurial-scm.org/D1104

httppeer: always produce native str header keys and values Differential Revision: https://phab.mercurial-scm.org/D1103

wireproto: use %d to encode int, not %s Differential Revision: https://phab.mercurial-scm.org/D1102

wireproto: use a proper exception instead of `assert False` Differential Revision: https://phab.mercurial-scm.org/D1101

wireproto: use listcomp instead of map() The latter returns a generator object on Python 3, which breaks various parts of hg that expected a list. Differential Revision: https://phab.mercurial-scm.org/D1100

dagutil: use a listcomp instead of a map() In Python 3, the map() returns a generator object instead of a list, and some parts of hg depend on this being consumable more than once or sortable in place. Differential Revision: https://phab.mercurial-scm.org/D1099

peer: when collecting method names for batch calls, bytes-ify __name__ This will explode violently if we have a non-ascii command name. That shouldn't ever happen in core, and seems unlikely even in third-party code. Regardless, it'll explode violently, so we can revisit things in the future if we need to change the encoding here. Differential Revision: https://phab.mercurial-scm.org/D1092

python3: replace im_{self,func} with __{self,func}__ globally These new names are portable back to Python 2.6. Differential Revision: https://phab.mercurial-scm.org/D1091

httppeer: extract content-type from headers using native str Differential Revision: https://phab.mercurial-scm.org/D1090

httppeer: convert request url back to bytes before inspecting it Differential Revision: https://phab.mercurial-scm.org/D1089

templater: explode if we try to emit a str Without this if branch, we infinitely recurse in _flatten, which is very confusing. Something in an hgweb template is trying to write out a string instead of a bytes on Python 3, and this at least makes it crash politely. Differential Revision: https://phab.mercurial-scm.org/D1088

hgweb: fill in content-type and content-length as native strings This lets me actually get a capabilities response from hgweb over http. Differential Revision: https://phab.mercurial-scm.org/D1087

hgweb: mimetype guessing needs a unicode path Differential Revision: https://phab.mercurial-scm.org/D1086

hgweb: set sent_headers attr as early as practical While doing Python 3 porting work, I've seen exceptions happen in parts of hgweb we normally assume are robust. It won't hurt anything to set this attribute significantly earlier, so let's do so and save confusing during the porting process. Differential Revision: https://phab.mercurial-scm.org/D1085

hgweb: detect Python 3-era libraries and use modern attribute names Differential Revision: https://phab.mercurial-scm.org/D1084

server: indent block that's about to get conditionalized Differential Revision: https://phab.mercurial-scm.org/D1083

templates: fix missed space between instability labels

templates: introduce labelcset() function in map-cmdline.default as example

templater: load aliases from [templatealias] section in map file This seems sometimes useful as an alias can be a function, but a template fragment can't.

templater: load template fragments from [templates] section in map file This allows us to %include map-cmdline.<style> file in our .hgrc files. The syntax is slightly different as hgrc doesn't support loading an external template file, but map-cmdline files don't use this feature, so the syntax can be considered identical in practice. Unnamed section is remapped for backward compatibility.

config: allow remapping the default section The next patch depends on it. It doesn't make sense that the default section can't be remapped with {'': whatever}.

templater: simplify merge of __base__ dicts by reading it first

phase: add a dedicated pretxnclose-phase hook This new hook mirror the newly introduced 'txnclose-phase' but can abort the transaction.

phase: add a dedicated txnclose-phase hook The new 'txnclose-phase' hook expose the phase movement information stored in 'tr.changes['phases]'. To provide a simple and straightforward hook API to the users, we introduce a new hook called for each revision affected. Since a transaction can affect the phase of multiple changesets, updating the existing 'txnclose' hook to expose that information would be more complex. The data for all moves will not fit in environment variables and iterations over each move would be cumbersome. So the introduction of a new dedicated hook is preferred in this changesets. This does not exclude the addition of the full phase movement information to the existing 'txnclose' in the future to help write more complex hooks.

bookmark: add a dedicated pretxnclose-bookmark hook This new hook mirror the newly introduced 'txnclose-bookmark' but can abort the transaction.