Merge branch 'gr/rebase-i-drop-warn'
Add "drop commit-object-name subject" command as another way to skip replaying of a commit in "rebase -i", and then punish those who do not use it (and instead just remove the lines) by throwing a warning. * gr/rebase-i-drop-warn: git rebase -i: add static check for commands and SHA-1 git rebase -i: warn about removed commits git-rebase -i: add command "drop" to remove a commit
This commit is contained in:
Junio C Hamano
@ -152,11 +152,21 @@ Commands:
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s, squash = use commit, but meld into previous commit
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f, fixup = like "squash", but discard this commit's log message
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x, exec = run command (the rest of the line) using shell
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d, drop = remove commit
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These lines can be re-ordered; they are executed from top to bottom.
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EOF
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if test $(get_missing_commit_check_level) = error
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then
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git stripspace --comment-lines >>"$todo" <<\EOF
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Do not remove any line. Use 'drop' explicitly to remove a commit.
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EOF
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else
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git stripspace --comment-lines >>"$todo" <<\EOF
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If you remove a line here THAT COMMIT WILL BE LOST.
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EOF
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fi
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}
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make_patch () {
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@ -505,7 +515,7 @@ do_next () {
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rm -f "$msg" "$author_script" "$amend" "$state_dir"/stopped-sha || exit
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read -r command sha1 rest < "$todo"
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case "$command" in
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"$comment_char"*|''|noop)
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"$comment_char"*|''|noop|drop|d)
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mark_action_done
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;;
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pick|p)
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@ -844,6 +854,180 @@ add_exec_commands () {
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mv "$1.new" "$1"
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}
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# Check if the SHA-1 passed as an argument is a
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# correct one, if not then print $2 in "$todo".badsha
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# $1: the SHA-1 to test
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# $2: the line to display if incorrect SHA-1
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check_commit_sha () {
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badsha=0
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if test -z $1
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then
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badsha=1
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else
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sha1_verif="$(git rev-parse --verify --quiet $1^{commit})"
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if test -z $sha1_verif
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then
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badsha=1
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fi
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fi
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if test $badsha -ne 0
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then
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warn "Warning: the SHA-1 is missing or isn't" \
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"a commit in the following line:"
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warn " - $2"
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warn
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fi
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return $badsha
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}
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# prints the bad commits and bad commands
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# from the todolist in stdin
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check_bad_cmd_and_sha () {
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retval=0
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git stripspace --strip-comments |
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(
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while read -r line
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do
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IFS=' '
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set -- $line
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command=$1
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sha1=$2
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case $command in
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''|noop|x|"exec")
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# Doesn't expect a SHA-1
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;;
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pick|p|drop|d|reword|r|edit|e|squash|s|fixup|f)
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if ! check_commit_sha $sha1 "$line"
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then
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retval=1
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fi
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;;
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*)
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warn "Warning: the command isn't recognized" \
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"in the following line:"
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warn " - $line"
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warn
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retval=1
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;;
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esac
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done
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return $retval
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)
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}
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# Print the list of the SHA-1 of the commits
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# from stdin to stdout
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todo_list_to_sha_list () {
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git stripspace --strip-comments |
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while read -r command sha1 rest
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do
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case $command in
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"$comment_char"*|''|noop|x|"exec")
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;;
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*)
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long_sha=$(git rev-list --no-walk "$sha1" 2>/dev/null)
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printf "%s\n" "$long_sha"
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;;
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esac
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done
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}
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# Use warn for each line in stdin
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warn_lines () {
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while read -r line
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do
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warn " - $line"
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done
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}
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# Switch to the branch in $into and notify it in the reflog
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checkout_onto () {
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GIT_REFLOG_ACTION="$GIT_REFLOG_ACTION: checkout $onto_name"
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output git checkout $onto || die_abort "could not detach HEAD"
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git update-ref ORIG_HEAD $orig_head
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}
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get_missing_commit_check_level () {
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check_level=$(git config --get rebase.missingCommitsCheck)
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check_level=${check_level:-ignore}
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# Don't be case sensitive
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printf '%s' "$check_level" | tr 'A-Z' 'a-z'
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}
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# Check if the user dropped some commits by mistake
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# Behaviour determined by rebase.missingCommitsCheck.
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# Check if there is an unrecognized command or a
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# bad SHA-1 in a command.
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check_todo_list () {
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raise_error=f
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check_level=$(get_missing_commit_check_level)
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case "$check_level" in
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warn|error)
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# Get the SHA-1 of the commits
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todo_list_to_sha_list <"$todo".backup >"$todo".oldsha1
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todo_list_to_sha_list <"$todo" >"$todo".newsha1
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# Sort the SHA-1 and compare them
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sort -u "$todo".oldsha1 >"$todo".oldsha1+
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mv "$todo".oldsha1+ "$todo".oldsha1
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sort -u "$todo".newsha1 >"$todo".newsha1+
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mv "$todo".newsha1+ "$todo".newsha1
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comm -2 -3 "$todo".oldsha1 "$todo".newsha1 >"$todo".miss
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# Warn about missing commits
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if test -s "$todo".miss
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then
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test "$check_level" = error && raise_error=t
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warn "Warning: some commits may have been dropped" \
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"accidentally."
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warn "Dropped commits (newer to older):"
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# Make the list user-friendly and display
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opt="--no-walk=sorted --format=oneline --abbrev-commit --stdin"
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git rev-list $opt <"$todo".miss | warn_lines
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warn "To avoid this message, use \"drop\" to" \
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"explicitly remove a commit."
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warn
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warn "Use 'git config rebase.missingCommitsCheck' to change" \
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"the level of warnings."
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warn "The possible behaviours are: ignore, warn, error."
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warn
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fi
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;;
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ignore)
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;;
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*)
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warn "Unrecognized setting $check_level for option" \
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"rebase.missingCommitsCheck. Ignoring."
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;;
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esac
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if ! check_bad_cmd_and_sha <"$todo"
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then
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raise_error=t
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fi
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if test $raise_error = t
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then
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# Checkout before the first commit of the
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# rebase: this way git rebase --continue
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# will work correctly as it expects HEAD to be
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# placed before the commit of the next action
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checkout_onto
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warn "You can fix this with 'git rebase --edit-todo'."
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die "Or you can abort the rebase with 'git rebase --abort'."
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fi
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}
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# The whole contents of this file is run by dot-sourcing it from
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# inside a shell function. It used to be that "return"s we see
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# below were not inside any function, and expected to return
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@ -1094,13 +1278,13 @@ git_sequence_editor "$todo" ||
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has_action "$todo" ||
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return 2
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check_todo_list
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expand_todo_ids
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test -d "$rewritten" || test -n "$force_rebase" || skip_unnecessary_picks
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GIT_REFLOG_ACTION="$GIT_REFLOG_ACTION: checkout $onto_name"
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output git checkout $onto || die_abort "could not detach HEAD"
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git update-ref ORIG_HEAD $orig_head
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checkout_onto
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do_rest
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}
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