48313592bf
The reverse patch application using "git apply" sometimes is too rigid. Since the user would get used to resolving conflicting merges by hand during the normal merge experience, using the same machinery would be more helpful rather than just giving up. Cherry-picking and reverting are essentially the same operation. You pick one commit, and apply the difference that commit introduces to its own commit ancestry chain to the current tree. Revert applies the diff in reverse while cherry-pick applies it forward. They share the same logic, just different messages and merge direction. Rewrite "git rebase" using "git cherry-pick". Signed-off-by: Junio C Hamano <junkio@cox.net>
69 lines
1.5 KiB
Bash
Executable File
69 lines
1.5 KiB
Bash
Executable File
#!/bin/sh
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#
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# Copyright (c) 2005 Junio C Hamano.
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#
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. git-sh-setup-script || die "Not a git archive."
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usage="usage: $0 "'<upstream> [<head>]
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Uses output from git-cherry to rebase local commits to the new head of
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upstream tree.'
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case "$#,$1" in
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1,*..*)
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upstream=$(expr "$1" : '\(.*\)\.\.') ours=$(expr "$1" : '.*\.\.\(.*\)$')
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set x "$upstream" "$ours"
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shift ;;
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esac
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git-update-cache --refresh || exit
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case "$#" in
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1) ours_symbolic=HEAD ;;
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2) ours_symbolic="$2" ;;
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*) die "$usage" ;;
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esac
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upstream=`git-rev-parse --verify "$1"` &&
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ours=`git-rev-parse --verify "$ours_symbolic"` || exit
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different1=$(git-diff-cache --name-only --cached "$ours") &&
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different2=$(git-diff-cache --name-only "$ours") &&
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test "$different1$different2" = "" ||
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die "Your working tree does not match $ours_symbolic."
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git-read-tree -m -u $ours $upstream &&
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git-rev-parse --verify "$upstream^0" >"$GIT_DIR/HEAD" || exit
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tmp=.rebase-tmp$$
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fail=$tmp-fail
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trap "rm -rf $tmp-*" 1 2 3 15
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>$fail
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git-cherry -v $upstream $ours |
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while read sign commit msg
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do
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case "$sign" in
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-)
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echo >&2 "* Already applied: $msg"
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continue ;;
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esac
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echo >&2 "* Applying: $msg"
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S=`cat "$GIT_DIR/HEAD"` &&
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git-cherry-pick-script --replay $commit || {
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echo >&2 "* Not applying the patch and continuing."
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echo $commit >>$fail
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git-reset-script --hard $S
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}
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done
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if test -s $fail
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then
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echo >&2 Some commits could not be rebased, check by hand:
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cat >&2 $fail
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echo >&2 "(the same list of commits are found in $tmp)"
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exit 1
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else
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rm -f $fail
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fi
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