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Git 2.21 Release Notes
Backward Compatibility Notes
Updates since v2.20
UI, Workflows & Features
* The "http.version" configuration variable can be used with recent
enough cURL library to force the version of HTTP used to talk when
fetching and pushing.
* Small fixes and features for fast-export and fast-import, mostly on
the fast-export side.
* "git push $there $src:$dst" rejects when $dst is not a fully
qualified refname and not clear what the end user meant. The
codepath has been taught to give a clearer error message, and also
guess where the push should go by taking the type of the pushed
object into account (e.g. a tag object would want to go under
Performance, Internal Implementation, Development Support etc.
* Code clean-up with optimization for the codepath that checks
(non-)existence of loose objects.
* More codepaths become aware of working with in-core repository
instance other than the default "the_repository".
Fixes since v2.20
* Updates for corner cases in merge-recursive.
(merge cc4cb0902c en/merge-path-collision later to maint).
* "git checkout frotz" (without any double-dash) avoids ambiguity by
making sure 'frotz' cannot be interpreted as a revision and as a
path at the same time. This safety has been updated to check also
a unique remote-tracking branch 'frotz' in a remote, when dwimming
to create a local branch 'frotz' out of a remote-tracking branch
'frotz' from a remote.
(merge be4908f103 nd/checkout-dwim-fix later to maint).
* Refspecs configured with "git -c var=val clone" did not propagate
to the resulting repository, which has been corrected.
(merge 7eae4a3ac4 sg/clone-initial-fetch-configuration later to maint).
* A properly configured username/email is required under
user.useConfigOnly in order to create commits; now "git stash"
(even though it creates commit objects to represent stash entries)
command is exempt from the requirement.
(merge 3bc2111fc2 sd/stash-wo-user-name later to maint).
* The http-backend CGI process did not correctly clean up the child
processes it spawns to run upload-pack etc. when it dies itself,
which has been corrected.
(merge 02818a98d7 mk/http-backend-kill-children-before-exit later to maint).
* Code cleanup, docfix, build fix, etc.