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submodule update: allow custom command to update submodule working tree

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Users can set submodule.$name.update to '!command' which will cause
'command' to be run instead of checkout/merge/rebase. This allows
the user finer-grained control over how the update is done.

The primary motivation for this was interoperability with stgit;
however being able to intercept the submodule update process may
prove useful for integrating with or extending other tools.

Signed-off-by: Chris Packham <judge.packham@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Chris Packham
2013-07-03 21:02:02 +12:00
committed by Junio C Hamano
parent d9857bfd4d
commit 6cb5728c43
3 changed files with 38 additions and 1 deletions
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6
git-submodule.sh
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@ -860,6 +860,12 @@ Maybe you want to use 'update --init'?")"
say_msg="$(eval_gettext "Submodule path '\$displaypath': merged in '\$sha1'")"
must_die_on_failure=yes
;;
!*)
command="${update_module#!}"
die_msg="$(eval_gettext "Execution of '\$command \$sha1' failed in submodule path '\$prefix\$sm_path'")"
say_msg="$(eval_gettext "Submodule path '\$prefix\$sm_path': '\$command \$sha1'")"
must_die_on_failure=yes
;;
*)
command="git checkout $subforce -q"
die_msg="$(eval_gettext "Unable to checkout '\$sha1' in submodule path '\$displaypath'")"