[PATCH 0/2] Add url.<base>.pushInsteadOf: URL rewriting for push only

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Many sites host repositories via both git:// for fetch-only anonymous
access and ssh:// for push-capable access.  The "insteadOf" mechanism
makes it straightforward to substitute the push-capable URLs for the
pull-only URLs, which proves convenient when the site hosts many
repositories using the same URL scheme.  However, if you use such a
substitution and you cannot use the ssh:// URLs (either because you
don't have SSH access or you don't have permission to a particular
repository), you cannot clone or fetch either, even though you could do
so via the git:// URLs.  A situation like this arises when sharing git
configuration files between systems, of which only a few have SSH access
to repositories.

"pushurl" provides a way to specify URLs used only for push, but this
requires configuring a pushurl for each such repository.  As in the
rationale for insteadOf, it makes sense to configure this for all
repositories hosted on a given system at once.

This patch series adds a new "pushInsteadOf" option to go with
"insteadOf".  pushInsteadOf allows systematically rewriting fetch-only
URLs to push-capable URLs when used with push.  For instance:

[url "ssh://example.org/"]
    pushInsteadOf = "git://example.org/"

This will allow clones of "git://example.org/path/to/repo" to
subsequently push to "ssh://example.org/path/to/repo", without manually
configuring pushurl for that remote.

Includes documentation for the new option, bash completion updates, and
test cases (both that pushInsteadOf applies to push and that it does
*not* apply to fetch).


Josh Triplett (2):
  Wrap rewrite globals in a struct in preparation for adding another set
  Add url.<base>.pushInsteadOf: URL rewriting for push only

 Documentation/config.txt               |   12 +++++
 Documentation/urls.txt                 |   18 +++++++
 contrib/completion/git-completion.bash |    2 +-
 remote.c                               |   80 +++++++++++++++++++------------
 t/t5516-fetch-push.sh                  |   31 ++++++++++++
 5 files changed, 111 insertions(+), 32 deletions(-)

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