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https://github.com/git/git.git
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91e70e00ac
'git commit -a' is rarely a good way to mark conflicts as resolved: the user anyway has to go manually through the list of conflicts to do the actual resolution, and it is usually better to use "git add" on each files after doing the resolution. On the other hand, using 'git commit -a' is potentially dangerous, as it makes it very easy to mistakenly commit conflict markers without noticing, and even worse, the user may have started a merge while having local changes that do not overlap with it in the working tree. While we're there, synchronize the 'git pull' and 'git merge' messages: the first was ending with '... and make a commit.', but not the latter. Eventually, git should detect that conflicts have been resolved in the working tree and tailor these messages further. Not only "use git commit -a" could be resurected, but "Fix them up in the work tree" should be dropped when it happens. Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr> Signed-off-by: Junio C Hamano <gitster@pobox.com>
340 lines
8.7 KiB
Bash
Executable file
340 lines
8.7 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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# Fetch one or more remote refs and merge it/them into the current HEAD.
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USAGE='[-n | --no-stat] [--[no-]commit] [--[no-]squash] [--[no-]ff|--ff-only] [--[no-]rebase|--rebase=preserve] [-s strategy]... [<fetch-options>] <repo> <head>...'
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LONG_USAGE='Fetch one or more remote refs and integrate it/them with the current HEAD.'
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SUBDIRECTORY_OK=Yes
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OPTIONS_SPEC=
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. git-sh-setup
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. git-sh-i18n
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set_reflog_action "pull${1+ $*}"
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require_work_tree_exists
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cd_to_toplevel
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die_conflict () {
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git diff-index --cached --name-status -r --ignore-submodules HEAD --
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if [ $(git config --bool --get advice.resolveConflict || echo true) = "true" ]; then
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die "$(gettext "Pull is not possible because you have unmerged files.
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Please, fix them up in the work tree, and then use 'git add/rm <file>'
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as appropriate to mark resolution and make a commit.")"
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else
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die "$(gettext "Pull is not possible because you have unmerged files.")"
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fi
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}
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die_merge () {
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if [ $(git config --bool --get advice.resolveConflict || echo true) = "true" ]; then
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die "$(gettext "You have not concluded your merge (MERGE_HEAD exists).
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Please, commit your changes before you can merge.")"
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else
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die "$(gettext "You have not concluded your merge (MERGE_HEAD exists).")"
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fi
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}
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test -z "$(git ls-files -u)" || die_conflict
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test -f "$GIT_DIR/MERGE_HEAD" && die_merge
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bool_or_string_config () {
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git config --bool "$1" 2>/dev/null || git config "$1"
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}
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strategy_args= diffstat= no_commit= squash= no_ff= ff_only=
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log_arg= verbosity= progress= recurse_submodules= verify_signatures=
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merge_args= edit= rebase_args=
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curr_branch=$(git symbolic-ref -q HEAD)
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curr_branch_short="${curr_branch#refs/heads/}"
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rebase=$(bool_or_string_config branch.$curr_branch_short.rebase)
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if test -z "$rebase"
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then
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rebase=$(bool_or_string_config pull.rebase)
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fi
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# Setup default fast-forward options via `pull.ff`
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pull_ff=$(git config pull.ff)
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case "$pull_ff" in
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false)
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no_ff=--no-ff
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;;
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only)
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ff_only=--ff-only
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;;
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esac
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dry_run=
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while :
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do
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case "$1" in
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-q|--quiet)
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verbosity="$verbosity -q" ;;
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-v|--verbose)
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verbosity="$verbosity -v" ;;
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--progress)
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progress=--progress ;;
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--no-progress)
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progress=--no-progress ;;
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-n|--no-stat|--no-summary)
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diffstat=--no-stat ;;
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--stat|--summary)
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diffstat=--stat ;;
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--log|--no-log)
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log_arg=$1 ;;
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--no-c|--no-co|--no-com|--no-comm|--no-commi|--no-commit)
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no_commit=--no-commit ;;
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--c|--co|--com|--comm|--commi|--commit)
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no_commit=--commit ;;
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-e|--edit)
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edit=--edit ;;
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--no-edit)
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edit=--no-edit ;;
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--sq|--squ|--squa|--squas|--squash)
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squash=--squash ;;
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--no-sq|--no-squ|--no-squa|--no-squas|--no-squash)
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squash=--no-squash ;;
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--ff)
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no_ff=--ff ;;
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--no-ff)
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no_ff=--no-ff ;;
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--ff-only)
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ff_only=--ff-only ;;
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-s=*|--s=*|--st=*|--str=*|--stra=*|--strat=*|--strate=*|\
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--strateg=*|--strategy=*|\
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-s|--s|--st|--str|--stra|--strat|--strate|--strateg|--strategy)
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case "$#,$1" in
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*,*=*)
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strategy=$(expr "z$1" : 'z-[^=]*=\(.*\)') ;;
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1,*)
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usage ;;
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*)
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strategy="$2"
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shift ;;
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esac
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strategy_args="${strategy_args}-s $strategy "
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;;
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-X*)
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case "$#,$1" in
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1,-X)
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usage ;;
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*,-X)
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xx="-X $(git rev-parse --sq-quote "$2")"
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shift ;;
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*,*)
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xx=$(git rev-parse --sq-quote "$1") ;;
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esac
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merge_args="$merge_args$xx "
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;;
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-r=*|--r=*|--re=*|--reb=*|--reba=*|--rebas=*|--rebase=*)
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rebase="${1#*=}"
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;;
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-r|--r|--re|--reb|--reba|--rebas|--rebase)
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rebase=true
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;;
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--no-r|--no-re|--no-reb|--no-reba|--no-rebas|--no-rebase)
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rebase=false
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;;
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--recurse-submodules)
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recurse_submodules=--recurse-submodules
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;;
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--recurse-submodules=*)
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recurse_submodules="$1"
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;;
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--no-recurse-submodules)
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recurse_submodules=--no-recurse-submodules
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;;
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--verify-signatures)
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verify_signatures=--verify-signatures
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;;
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--no-verify-signatures)
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verify_signatures=--no-verify-signatures
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;;
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--gpg-sign|-S)
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gpg_sign_args=-S
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;;
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--gpg-sign=*)
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gpg_sign_args=$(git rev-parse --sq-quote "-S${1#--gpg-sign=}")
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;;
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-S*)
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gpg_sign_args=$(git rev-parse --sq-quote "$1")
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;;
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--d|--dr|--dry|--dry-|--dry-r|--dry-ru|--dry-run)
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dry_run=--dry-run
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;;
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-h|--help-all)
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usage
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;;
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*)
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# Pass thru anything that may be meant for fetch.
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break
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;;
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esac
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shift
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done
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case "$rebase" in
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preserve)
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rebase=true
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rebase_args=--preserve-merges
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;;
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true|false|'')
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;;
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*)
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echo "Invalid value for --rebase, should be true, false, or preserve"
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usage
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exit 1
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;;
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esac
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error_on_no_merge_candidates () {
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exec >&2
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for opt
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do
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case "$opt" in
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-t|--t|--ta|--tag|--tags)
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echo "It doesn't make sense to pull all tags; you probably meant:"
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echo " git fetch --tags"
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exit 1
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esac
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done
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if test true = "$rebase"
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then
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op_type=rebase
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op_prep=against
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else
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op_type=merge
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op_prep=with
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fi
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upstream=$(git config "branch.$curr_branch_short.merge")
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remote=$(git config "branch.$curr_branch_short.remote")
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if [ $# -gt 1 ]; then
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if [ "$rebase" = true ]; then
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printf "There is no candidate for rebasing against "
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else
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printf "There are no candidates for merging "
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fi
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echo "among the refs that you just fetched."
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echo "Generally this means that you provided a wildcard refspec which had no"
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echo "matches on the remote end."
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elif [ $# -gt 0 ] && [ "$1" != "$remote" ]; then
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echo "You asked to pull from the remote '$1', but did not specify"
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echo "a branch. Because this is not the default configured remote"
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echo "for your current branch, you must specify a branch on the command line."
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elif [ -z "$curr_branch" -o -z "$upstream" ]; then
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. git-parse-remote
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error_on_missing_default_upstream "pull" $op_type $op_prep \
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"git pull <remote> <branch>"
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else
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echo "Your configuration specifies to $op_type $op_prep the ref '${upstream#refs/heads/}'"
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echo "from the remote, but no such ref was fetched."
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fi
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exit 1
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}
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test true = "$rebase" && {
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if ! git rev-parse -q --verify HEAD >/dev/null
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then
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# On an unborn branch
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if test -f "$GIT_DIR/index"
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then
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die "$(gettext "updating an unborn branch with changes added to the index")"
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fi
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else
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require_clean_work_tree "pull with rebase" "Please commit or stash them."
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fi
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oldremoteref= &&
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test -n "$curr_branch" &&
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. git-parse-remote &&
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remoteref="$(get_remote_merge_branch "$@" 2>/dev/null)" &&
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oldremoteref=$(git merge-base --fork-point "$remoteref" $curr_branch 2>/dev/null)
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}
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orig_head=$(git rev-parse -q --verify HEAD)
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git fetch $verbosity $progress $dry_run $recurse_submodules --update-head-ok "$@" || exit 1
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test -z "$dry_run" || exit 0
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curr_head=$(git rev-parse -q --verify HEAD)
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if test -n "$orig_head" && test "$curr_head" != "$orig_head"
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then
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# The fetch involved updating the current branch.
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# The working tree and the index file is still based on the
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# $orig_head commit, but we are merging into $curr_head.
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# First update the working tree to match $curr_head.
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eval_gettextln "Warning: fetch updated the current branch head.
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Warning: fast-forwarding your working tree from
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Warning: commit \$orig_head." >&2
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git update-index -q --refresh
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git read-tree -u -m "$orig_head" "$curr_head" ||
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die "$(eval_gettext "Cannot fast-forward your working tree.
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After making sure that you saved anything precious from
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$ git diff \$orig_head
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output, run
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$ git reset --hard
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to recover.")"
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fi
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merge_head=$(sed -e '/ not-for-merge /d' \
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-e 's/ .*//' "$GIT_DIR"/FETCH_HEAD | \
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tr '\012' ' ')
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case "$merge_head" in
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'')
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error_on_no_merge_candidates "$@"
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;;
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?*' '?*)
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if test -z "$orig_head"
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then
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die "$(gettext "Cannot merge multiple branches into empty head")"
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fi
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if test true = "$rebase"
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then
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die "$(gettext "Cannot rebase onto multiple branches")"
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fi
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;;
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esac
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# Pulling into unborn branch: a shorthand for branching off
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# FETCH_HEAD, for lazy typers.
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if test -z "$orig_head"
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then
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# Two-way merge: we claim the index is based on an empty tree,
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# and try to fast-forward to HEAD. This ensures we will not
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# lose index/worktree changes that the user already made on
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# the unborn branch.
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empty_tree=4b825dc642cb6eb9a060e54bf8d69288fbee4904
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git read-tree -m -u $empty_tree $merge_head &&
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git update-ref -m "initial pull" HEAD $merge_head "$curr_head"
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exit
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fi
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if test true = "$rebase"
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then
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o=$(git show-branch --merge-base $curr_branch $merge_head $oldremoteref)
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if test "$oldremoteref" = "$o"
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then
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unset oldremoteref
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fi
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fi
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merge_name=$(git fmt-merge-msg $log_arg <"$GIT_DIR/FETCH_HEAD") || exit
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case "$rebase" in
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true)
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eval="git-rebase $diffstat $strategy_args $merge_args $rebase_args $verbosity"
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eval="$eval $gpg_sign_args"
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eval="$eval --onto $merge_head ${oldremoteref:-$merge_head}"
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;;
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*)
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eval="git-merge $diffstat $no_commit $verify_signatures $edit $squash $no_ff $ff_only"
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eval="$eval $log_arg $strategy_args $merge_args $verbosity $progress"
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eval="$eval $gpg_sign_args"
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eval="$eval \"\$merge_name\" HEAD $merge_head"
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;;
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esac
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eval "exec $eval"
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