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![Junio C Hamano](/assets/img/avatar_default.png)
"git rebase", unlike all other callers of "gc --auto", did not ignore the exit code from "gc --auto". * jk/ok-to-fail-gc-auto-in-rebase: rebase: ignore failures from "gc --auto"
637 lines
16 KiB
Bash
Executable file
637 lines
16 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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SUBDIRECTORY_OK=Yes
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OPTIONS_KEEPDASHDASH=
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OPTIONS_STUCKLONG=t
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OPTIONS_SPEC="\
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git rebase [-i] [options] [--exec <cmd>] [--onto <newbase>] [<upstream>] [<branch>]
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git rebase [-i] [options] [--exec <cmd>] [--onto <newbase>] --root [<branch>]
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git-rebase --continue | --abort | --skip | --edit-todo
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--
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Available options are
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v,verbose! display a diffstat of what changed upstream
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q,quiet! be quiet. implies --no-stat
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autostash automatically stash/stash pop before and after
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fork-point use 'merge-base --fork-point' to refine upstream
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onto=! rebase onto given branch instead of upstream
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p,preserve-merges! try to recreate merges instead of ignoring them
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s,strategy=! use the given merge strategy
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no-ff! cherry-pick all commits, even if unchanged
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m,merge! use merging strategies to rebase
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i,interactive! let the user edit the list of commits to rebase
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x,exec=! add exec lines after each commit of the editable list
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k,keep-empty preserve empty commits during rebase
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f,force-rebase! force rebase even if branch is up to date
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X,strategy-option=! pass the argument through to the merge strategy
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stat! display a diffstat of what changed upstream
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n,no-stat! do not show diffstat of what changed upstream
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verify allow pre-rebase hook to run
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rerere-autoupdate allow rerere to update index with resolved conflicts
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root! rebase all reachable commits up to the root(s)
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autosquash move commits that begin with squash!/fixup! under -i
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committer-date-is-author-date! passed to 'git am'
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ignore-date! passed to 'git am'
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whitespace=! passed to 'git apply'
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ignore-whitespace! passed to 'git apply'
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C=! passed to 'git apply'
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S,gpg-sign? GPG-sign commits
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Actions:
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continue! continue
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abort! abort and check out the original branch
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skip! skip current patch and continue
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edit-todo! edit the todo list during an interactive rebase
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"
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. git-sh-setup
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. git-sh-i18n
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set_reflog_action rebase
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require_work_tree_exists
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cd_to_toplevel
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LF='
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'
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ok_to_skip_pre_rebase=
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resolvemsg="
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$(gettext 'When you have resolved this problem, run "git rebase --continue".
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If you prefer to skip this patch, run "git rebase --skip" instead.
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To check out the original branch and stop rebasing, run "git rebase --abort".')
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"
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unset onto
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unset restrict_revision
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cmd=
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strategy=
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strategy_opts=
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do_merge=
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merge_dir="$GIT_DIR"/rebase-merge
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apply_dir="$GIT_DIR"/rebase-apply
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verbose=
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diffstat=
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test "$(git config --bool rebase.stat)" = true && diffstat=t
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autostash="$(git config --bool rebase.autostash || echo false)"
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fork_point=auto
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git_am_opt=
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rebase_root=
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force_rebase=
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allow_rerere_autoupdate=
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# Non-empty if a rebase was in progress when 'git rebase' was invoked
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in_progress=
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# One of {am, merge, interactive}
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type=
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# One of {"$GIT_DIR"/rebase-apply, "$GIT_DIR"/rebase-merge}
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state_dir=
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# One of {'', continue, skip, abort}, as parsed from command line
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action=
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preserve_merges=
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autosquash=
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keep_empty=
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test "$(git config --bool rebase.autosquash)" = "true" && autosquash=t
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gpg_sign_opt=
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read_basic_state () {
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test -f "$state_dir/head-name" &&
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test -f "$state_dir/onto" &&
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head_name=$(cat "$state_dir"/head-name) &&
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onto=$(cat "$state_dir"/onto) &&
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# We always write to orig-head, but interactive rebase used to write to
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# head. Fall back to reading from head to cover for the case that the
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# user upgraded git with an ongoing interactive rebase.
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if test -f "$state_dir"/orig-head
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then
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orig_head=$(cat "$state_dir"/orig-head)
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else
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orig_head=$(cat "$state_dir"/head)
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fi &&
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GIT_QUIET=$(cat "$state_dir"/quiet) &&
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test -f "$state_dir"/verbose && verbose=t
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test -f "$state_dir"/strategy && strategy="$(cat "$state_dir"/strategy)"
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test -f "$state_dir"/strategy_opts &&
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strategy_opts="$(cat "$state_dir"/strategy_opts)"
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test -f "$state_dir"/allow_rerere_autoupdate &&
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allow_rerere_autoupdate="$(cat "$state_dir"/allow_rerere_autoupdate)"
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test -f "$state_dir"/gpg_sign_opt &&
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gpg_sign_opt="$(cat "$state_dir"/gpg_sign_opt)"
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}
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write_basic_state () {
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echo "$head_name" > "$state_dir"/head-name &&
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echo "$onto" > "$state_dir"/onto &&
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echo "$orig_head" > "$state_dir"/orig-head &&
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echo "$GIT_QUIET" > "$state_dir"/quiet &&
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test t = "$verbose" && : > "$state_dir"/verbose
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test -n "$strategy" && echo "$strategy" > "$state_dir"/strategy
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test -n "$strategy_opts" && echo "$strategy_opts" > \
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"$state_dir"/strategy_opts
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test -n "$allow_rerere_autoupdate" && echo "$allow_rerere_autoupdate" > \
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"$state_dir"/allow_rerere_autoupdate
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test -n "$gpg_sign_opt" && echo "$gpg_sign_opt" > "$state_dir"/gpg_sign_opt
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}
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output () {
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case "$verbose" in
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'')
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output=$("$@" 2>&1 )
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status=$?
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test $status != 0 && printf "%s\n" "$output"
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return $status
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;;
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*)
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"$@"
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;;
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esac
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}
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move_to_original_branch () {
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case "$head_name" in
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refs/*)
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message="rebase finished: $head_name onto $onto"
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git update-ref -m "$message" \
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$head_name $(git rev-parse HEAD) $orig_head &&
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git symbolic-ref \
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-m "rebase finished: returning to $head_name" \
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HEAD $head_name ||
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die "$(gettext "Could not move back to $head_name")"
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;;
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esac
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}
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apply_autostash () {
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if test -f "$state_dir/autostash"
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then
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stash_sha1=$(cat "$state_dir/autostash")
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if git stash apply $stash_sha1 2>&1 >/dev/null
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then
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echo "$(gettext 'Applied autostash.')"
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else
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git stash store -m "autostash" -q $stash_sha1 ||
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die "$(eval_gettext "Cannot store \$stash_sha1")"
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gettext 'Applying autostash resulted in conflicts.
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Your changes are safe in the stash.
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You can run "git stash pop" or "git stash drop" at any time.
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'
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fi
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fi
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}
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finish_rebase () {
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apply_autostash &&
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{ git gc --auto || true; } &&
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rm -rf "$state_dir"
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}
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run_specific_rebase () {
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if [ "$interactive_rebase" = implied ]; then
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GIT_EDITOR=:
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export GIT_EDITOR
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autosquash=
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fi
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. git-rebase--$type
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ret=$?
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if test $ret -eq 0
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then
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finish_rebase
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elif test $ret -eq 2 # special exit status for rebase -i
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then
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apply_autostash &&
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rm -rf "$state_dir" &&
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die "Nothing to do"
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fi
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exit $ret
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}
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run_pre_rebase_hook () {
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if test -z "$ok_to_skip_pre_rebase" &&
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test -x "$(git rev-parse --git-path hooks/pre-rebase)"
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then
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"$(git rev-parse --git-path hooks/pre-rebase)" ${1+"$@"} ||
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die "$(gettext "The pre-rebase hook refused to rebase.")"
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fi
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}
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test -f "$apply_dir"/applying &&
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die "$(gettext "It looks like git-am is in progress. Cannot rebase.")"
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if test -d "$apply_dir"
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then
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type=am
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state_dir="$apply_dir"
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elif test -d "$merge_dir"
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then
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if test -f "$merge_dir"/interactive
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then
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type=interactive
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interactive_rebase=explicit
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else
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type=merge
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fi
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state_dir="$merge_dir"
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fi
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test -n "$type" && in_progress=t
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total_argc=$#
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while test $# != 0
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do
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case "$1" in
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--no-verify)
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ok_to_skip_pre_rebase=yes
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;;
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--verify)
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ok_to_skip_pre_rebase=
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;;
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--continue|--skip|--abort|--edit-todo)
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test $total_argc -eq 2 || usage
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action=${1##--}
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;;
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--onto=*)
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onto="${1#--onto=}"
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;;
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--exec=*)
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cmd="${cmd}exec ${1#--exec=}${LF}"
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;;
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--interactive)
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interactive_rebase=explicit
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;;
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--keep-empty)
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keep_empty=yes
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;;
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--preserve-merges)
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preserve_merges=t
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test -z "$interactive_rebase" && interactive_rebase=implied
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;;
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--autosquash)
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autosquash=t
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;;
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--no-autosquash)
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autosquash=
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;;
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--fork-point)
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fork_point=t
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;;
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--no-fork-point)
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fork_point=
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;;
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--merge)
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do_merge=t
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;;
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--strategy-option=*)
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strategy_opts="$strategy_opts $(git rev-parse --sq-quote "--${1#--strategy-option=}")"
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do_merge=t
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test -z "$strategy" && strategy=recursive
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;;
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--strategy=*)
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strategy="${1#--strategy=}"
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do_merge=t
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;;
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--no-stat)
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diffstat=
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;;
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--stat)
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diffstat=t
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;;
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--autostash)
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autostash=true
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;;
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--no-autostash)
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autostash=false
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;;
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--verbose)
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verbose=t
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diffstat=t
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GIT_QUIET=
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;;
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--quiet)
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GIT_QUIET=t
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git_am_opt="$git_am_opt -q"
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verbose=
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diffstat=
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;;
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--whitespace=*)
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git_am_opt="$git_am_opt --whitespace=${1#--whitespace=}"
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case "${1#--whitespace=}" in
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fix|strip)
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force_rebase=t
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;;
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esac
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;;
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--ignore-whitespace)
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git_am_opt="$git_am_opt $1"
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;;
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--committer-date-is-author-date|--ignore-date)
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git_am_opt="$git_am_opt $1"
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force_rebase=t
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;;
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-C*)
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git_am_opt="$git_am_opt $1"
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;;
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--root)
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rebase_root=t
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;;
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--force-rebase|--no-ff)
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force_rebase=t
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;;
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--rerere-autoupdate|--no-rerere-autoupdate)
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allow_rerere_autoupdate="$1"
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;;
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--gpg-sign)
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gpg_sign_opt=-S
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;;
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--gpg-sign=*)
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gpg_sign_opt="-S${1#--gpg-sign=}"
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;;
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--)
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shift
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break
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;;
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esac
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shift
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done
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test $# -gt 2 && usage
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if test -n "$cmd" &&
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test "$interactive_rebase" != explicit
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then
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die "$(gettext "The --exec option must be used with the --interactive option")"
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fi
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if test -n "$action"
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then
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test -z "$in_progress" && die "$(gettext "No rebase in progress?")"
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# Only interactive rebase uses detailed reflog messages
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if test "$type" = interactive && test "$GIT_REFLOG_ACTION" = rebase
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then
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GIT_REFLOG_ACTION="rebase -i ($action)"
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export GIT_REFLOG_ACTION
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fi
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fi
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if test "$action" = "edit-todo" && test "$type" != "interactive"
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then
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die "$(gettext "The --edit-todo action can only be used during interactive rebase.")"
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fi
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case "$action" in
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continue)
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# Sanity check
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git rev-parse --verify HEAD >/dev/null ||
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die "$(gettext "Cannot read HEAD")"
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git update-index --ignore-submodules --refresh &&
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git diff-files --quiet --ignore-submodules || {
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echo "$(gettext "You must edit all merge conflicts and then
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mark them as resolved using git add")"
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exit 1
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}
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read_basic_state
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run_specific_rebase
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;;
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skip)
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output git reset --hard HEAD || exit $?
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read_basic_state
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run_specific_rebase
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;;
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abort)
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git rerere clear
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read_basic_state
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case "$head_name" in
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refs/*)
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git symbolic-ref -m "rebase: aborting" HEAD $head_name ||
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die "$(eval_gettext "Could not move back to \$head_name")"
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;;
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esac
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output git reset --hard $orig_head
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finish_rebase
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exit
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;;
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edit-todo)
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run_specific_rebase
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;;
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esac
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# Make sure no rebase is in progress
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if test -n "$in_progress"
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then
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state_dir_base=${state_dir##*/}
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cmd_live_rebase="git rebase (--continue | --abort | --skip)"
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cmd_clear_stale_rebase="rm -fr \"$state_dir\""
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die "
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$(eval_gettext 'It seems that there is already a $state_dir_base directory, and
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I wonder if you are in the middle of another rebase. If that is the
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case, please try
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$cmd_live_rebase
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If that is not the case, please
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$cmd_clear_stale_rebase
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and run me again. I am stopping in case you still have something
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valuable there.')"
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fi
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if test -n "$rebase_root" && test -z "$onto"
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then
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test -z "$interactive_rebase" && interactive_rebase=implied
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fi
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if test -n "$interactive_rebase"
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then
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type=interactive
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state_dir="$merge_dir"
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elif test -n "$do_merge"
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then
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type=merge
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state_dir="$merge_dir"
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else
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type=am
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state_dir="$apply_dir"
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fi
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if test -z "$rebase_root"
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then
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case "$#" in
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0)
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if ! upstream_name=$(git rev-parse --symbolic-full-name \
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--verify -q @{upstream} 2>/dev/null)
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then
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. git-parse-remote
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error_on_missing_default_upstream "rebase" "rebase" \
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"against" "git rebase <branch>"
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fi
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test "$fork_point" = auto && fork_point=t
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;;
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*) upstream_name="$1"
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if test "$upstream_name" = "-"
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then
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upstream_name="@{-1}"
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fi
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shift
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;;
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esac
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upstream=$(peel_committish "${upstream_name}") ||
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die "$(eval_gettext "invalid upstream \$upstream_name")"
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upstream_arg="$upstream_name"
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else
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if test -z "$onto"
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then
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empty_tree=$(git hash-object -t tree /dev/null)
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onto=$(git commit-tree $empty_tree </dev/null)
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squash_onto="$onto"
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fi
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unset upstream_name
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unset upstream
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test $# -gt 1 && usage
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upstream_arg=--root
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fi
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# Make sure the branch to rebase onto is valid.
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onto_name=${onto-"$upstream_name"}
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case "$onto_name" in
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*...*)
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if left=${onto_name%...*} right=${onto_name#*...} &&
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onto=$(git merge-base --all ${left:-HEAD} ${right:-HEAD})
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then
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case "$onto" in
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?*"$LF"?*)
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die "$(eval_gettext "\$onto_name: there are more than one merge bases")"
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;;
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'')
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die "$(eval_gettext "\$onto_name: there is no merge base")"
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;;
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esac
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else
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die "$(eval_gettext "\$onto_name: there is no merge base")"
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fi
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;;
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*)
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onto=$(peel_committish "$onto_name") ||
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die "$(eval_gettext "Does not point to a valid commit: \$onto_name")"
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;;
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esac
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# If the branch to rebase is given, that is the branch we will rebase
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# $branch_name -- branch being rebased, or HEAD (already detached)
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# $orig_head -- commit object name of tip of the branch before rebasing
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# $head_name -- refs/heads/<that-branch> or "detached HEAD"
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switch_to=
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case "$#" in
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1)
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# Is it "rebase other $branchname" or "rebase other $commit"?
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branch_name="$1"
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switch_to="$1"
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if git show-ref --verify --quiet -- "refs/heads/$1" &&
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orig_head=$(git rev-parse -q --verify "refs/heads/$1")
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then
|
|
head_name="refs/heads/$1"
|
|
elif orig_head=$(git rev-parse -q --verify "$1")
|
|
then
|
|
head_name="detached HEAD"
|
|
else
|
|
die "$(eval_gettext "fatal: no such branch: \$branch_name")"
|
|
fi
|
|
;;
|
|
0)
|
|
# Do not need to switch branches, we are already on it.
|
|
if branch_name=$(git symbolic-ref -q HEAD)
|
|
then
|
|
head_name=$branch_name
|
|
branch_name=$(expr "z$branch_name" : 'zrefs/heads/\(.*\)')
|
|
else
|
|
head_name="detached HEAD"
|
|
branch_name=HEAD ;# detached
|
|
fi
|
|
orig_head=$(git rev-parse --verify HEAD) || exit
|
|
;;
|
|
*)
|
|
die "BUG: unexpected number of arguments left to parse"
|
|
;;
|
|
esac
|
|
|
|
if test "$fork_point" = t
|
|
then
|
|
new_upstream=$(git merge-base --fork-point "$upstream_name" \
|
|
"${switch_to:-HEAD}")
|
|
if test -n "$new_upstream"
|
|
then
|
|
restrict_revision=$new_upstream
|
|
fi
|
|
fi
|
|
|
|
if test "$autostash" = true && ! (require_clean_work_tree) 2>/dev/null
|
|
then
|
|
stash_sha1=$(git stash create "autostash") ||
|
|
die "$(gettext 'Cannot autostash')"
|
|
|
|
mkdir -p "$state_dir" &&
|
|
echo $stash_sha1 >"$state_dir/autostash" &&
|
|
stash_abbrev=$(git rev-parse --short $stash_sha1) &&
|
|
echo "$(eval_gettext 'Created autostash: $stash_abbrev')" &&
|
|
git reset --hard
|
|
fi
|
|
|
|
require_clean_work_tree "rebase" "$(gettext "Please commit or stash them.")"
|
|
|
|
# Now we are rebasing commits $upstream..$orig_head (or with --root,
|
|
# everything leading up to $orig_head) on top of $onto
|
|
|
|
# Check if we are already based on $onto with linear history,
|
|
# but this should be done only when upstream and onto are the same
|
|
# and if this is not an interactive rebase.
|
|
mb=$(git merge-base "$onto" "$orig_head")
|
|
if test "$type" != interactive && test "$upstream" = "$onto" &&
|
|
test "$mb" = "$onto" && test -z "$restrict_revision" &&
|
|
# linear history?
|
|
! (git rev-list --parents "$onto".."$orig_head" | sane_grep " .* ") > /dev/null
|
|
then
|
|
if test -z "$force_rebase"
|
|
then
|
|
# Lazily switch to the target branch if needed...
|
|
test -z "$switch_to" ||
|
|
GIT_REFLOG_ACTION="$GIT_REFLOG_ACTION: checkout $switch_to" \
|
|
git checkout -q "$switch_to" --
|
|
say "$(eval_gettext "Current branch \$branch_name is up to date.")"
|
|
finish_rebase
|
|
exit 0
|
|
else
|
|
say "$(eval_gettext "Current branch \$branch_name is up to date, rebase forced.")"
|
|
fi
|
|
fi
|
|
|
|
# If a hook exists, give it a chance to interrupt
|
|
run_pre_rebase_hook "$upstream_arg" "$@"
|
|
|
|
if test -n "$diffstat"
|
|
then
|
|
if test -n "$verbose"
|
|
then
|
|
echo "$(eval_gettext "Changes from \$mb to \$onto:")"
|
|
fi
|
|
# We want color (if set), but no pager
|
|
GIT_PAGER='' git diff --stat --summary "$mb" "$onto"
|
|
fi
|
|
|
|
test "$type" = interactive && run_specific_rebase
|
|
|
|
# Detach HEAD and reset the tree
|
|
say "$(gettext "First, rewinding head to replay your work on top of it...")"
|
|
|
|
GIT_REFLOG_ACTION="$GIT_REFLOG_ACTION: checkout $onto_name" \
|
|
git checkout -q "$onto^0" || die "could not detach HEAD"
|
|
git update-ref ORIG_HEAD $orig_head
|
|
|
|
# If the $onto is a proper descendant of the tip of the branch, then
|
|
# we just fast-forwarded.
|
|
if test "$mb" = "$orig_head"
|
|
then
|
|
say "$(eval_gettext "Fast-forwarded \$branch_name to \$onto_name.")"
|
|
move_to_original_branch
|
|
finish_rebase
|
|
exit 0
|
|
fi
|
|
|
|
if test -n "$rebase_root"
|
|
then
|
|
revisions="$onto..$orig_head"
|
|
else
|
|
revisions="${restrict_revision-$upstream}..$orig_head"
|
|
fi
|
|
|
|
run_specific_rebase
|