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Implement "git stash branch <newbranch> <stash>"

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Restores the stashed state on a new branch rooted at the commit on which
the stash was originally created, so that conflicts caused by subsequent
changes on the original branch can be dealt with.

(Thanks to Junio for this nice idea.)

Signed-off-by: Abhijit Menon-Sen <ams@toroid.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Abhijit Menon-Sen 2008-07-03 11:46:05 +05:30 committed by Junio C Hamano
parent 6991357513
commit 656b503452
2 changed files with 39 additions and 1 deletions
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19
Documentation/git-stash.txt
View file

@ -8,8 +8,11 @@ git-stash - Stash the changes in a dirty working directory away
SYNOPSIS
--------
[verse]
'git stash' (list | show [<stash>] | apply [<stash>] | clear | drop [<stash>] | pop [<stash>])
'git stash' list
'git stash' (show | apply | drop | pop ) [<stash>]
'git stash' branch <branchname> [<stash>]
'git stash' [save [<message>]]
'git stash' clear
DESCRIPTION
-----------
@ -81,6 +84,20 @@ tree's changes, but also the index's ones. However, this can fail, when you
have conflicts (which are stored in the index, where you therefore can no
longer apply the changes as they were originally).
branch <branchname> [<stash>]::
Creates and checks out a new branch named `<branchname>` starting from
the commit at which the `<stash>` was originally created, applies the
changes recorded in `<stash>` to the new working tree and index, then
drops the `<stash>` if that completes successfully. When no `<stash>`
is given, applies the latest one.
+
This is useful if the branch on which you ran `git stash save` has
changed enough that `git stash apply` fails due to conflicts. Since
the stash is applied on top of the commit that was HEAD at the time
`git stash` was run, it restores the originally stashed state with
no conflicts.
clear::
Remove all the stashed states. Note that those states will then
be subject to pruning, and may be difficult or impossible to recover.

21
git-stash.sh
View file

@ -218,6 +218,23 @@ drop_stash () {
git rev-parse --verify "$ref_stash@{0}" > /dev/null 2>&1 || clear_stash
}
apply_to_branch () {
have_stash || die 'Nothing to apply'
test -n "$1" || die 'No branch name specified'
branch=$1
if test -z "$2"
then
set x "$ref_stash@{0}"
fi
stash=$2
git-checkout -b $branch $stash^ &&
apply_stash --index $stash &&
drop_stash $stash
}
# Main command set
case "$1" in
list)
@ -264,6 +281,10 @@ pop)
drop_stash "$@"
fi
;;
branch)
shift
apply_to_branch "$@"
;;
*)
if test $# -eq 0
then