diff options
| -rwxr-xr-x | git-rebase.sh | 29 |
1 files changed, 18 insertions, 11 deletions
diff --git a/git-rebase.sh b/git-rebase.sh index c1619ff140..16d4359830 100755 --- a/git-rebase.sh +++ b/git-rebase.sh @@ -21,32 +21,30 @@ you still have something valuable there.' exit 1 fi -# The other head is given. Make sure it is valid. -other=$(git-rev-parse --verify "$1^0") || usage - -# Make sure we have HEAD that is valid. -head=$(git-rev-parse --verify "HEAD^0") || exit - # The tree must be really really clean. git-update-index --refresh || exit diff=$(git-diff-index --cached --name-status -r HEAD) -case "$different" in +case "$diff" in ?*) echo "$diff" exit 1 ;; esac +# The other head is given. Make sure it is valid. +other=$(git-rev-parse --verify "$1^0") || usage + +# Make sure the branch to rebase is valid. +head=$(git-rev-parse --verify "${2-HEAD}^0") || exit + # If the branch to rebase is given, first switch to it. case "$#" in 2) - head=$(git-rev-parse --verify "$2^") || usage git-checkout "$2" || usage esac -# If the HEAD is a proper descendant of $other, we do not even need -# to rebase. Make sure we do not do needless rebase. In such a -# case, merge-base should be the same as "$other". mb=$(git-merge-base "$other" "$head") + +# Check if we are already based on $other. if test "$mb" = "$other" then echo >&2 "Current branch `git-symbolic-ref HEAD` is up to date." @@ -55,5 +53,14 @@ fi # Rewind the head to "$other" git-reset --hard "$other" + +# If the $other is a proper descendant of the tip of the branch, then +# we just fast forwarded. +if test "$mb" = "$head" +then + echo >&2 "Fast-forwarded $head to $other." + exit 0 +fi + git-format-patch -k --stdout --full-index "$other" ORIG_HEAD | git am --binary -3 -k |