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narrow: only send the narrowspecs back if ACL in play...
narrow: only send the narrowspecs back if ACL in play I am unable to think why we need to send narrowspecs back from the server. The current state adds a 'narrow:spec' part to each changegroup which is generated when narrow extension is enabled. So we are sending narrowspecs on pull also. There is a problem with sending the narrowspecs the way we are doing it right now. We add include and exclude as parameter of the 'narrow:spec' bundle2 part. The the len of include or exclude string increase 255 which is obvious while working on large repos, bundle2 generation code breaks. For more on that refer issue5952 on bugzilla. I was thinking why we need to send the narrowspecs back, and deleted the 'narrow:spec' bundle2 part generation code and found that only narrow-acl test has some failure. With this patch, we will only send the 'narrow:spec' bundle2 part if ACL is enabled because the original narrowspecs in those cases can be a subset of narrowspecs user requested. There are phase related output change in couple of tests. The output change shows that we are now dealing in public phases completely. So maybe sending the narrow:spec bundle2 part was preventing phases being exchanged or phase bundle2 data being applied. Differential Revision: https://phab.mercurial-scm.org/D4931
Brodie Rao - - Load All Authors

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diffs.txt
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Mercurial's default format for showing changes between two versions of
a file is compatible with the unified format of GNU diff, which can be
used by GNU patch and many other standard tools.
While this standard format is often enough, it does not encode the
following information:
- executable status and other permission bits
- copy or rename information
- changes in binary files
- creation or deletion of empty files
Mercurial also supports the extended diff format from the git VCS
which addresses these limitations. The git diff format is not produced
by default because a few widespread tools still do not understand this
format.
This means that when generating diffs from a Mercurial repository
(e.g. with :hg:`export`), you should be careful about things like file
copies and renames or other things mentioned above, because when
applying a standard diff to a different repository, this extra
information is lost. Mercurial's internal operations (like push and
pull) are not affected by this, because they use an internal binary
format for communicating changes.
To make Mercurial produce the git extended diff format, use the --git
option available for many commands, or set 'git = True' in the [diff]
section of your configuration file. You do not need to set this option
when importing diffs in this format or using them in the mq extension.