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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
   refs/tags/).


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.