Merge branch 'mh/maint-commit-color-status' into maint
[gitweb.git] / git-pull.sh
index 698e82b116d64236b80b7d6b9ae687aadba07afe..2c7f432dc04254dcb9906f4d078eb16d195848ca 100755 (executable)
@@ -4,7 +4,7 @@
 #
 # Fetch one or more remote refs and merge it/them into the current HEAD.
 
-USAGE='[-n | --no-summary] [--[no-]commit] [--[no-]squash] [--[no-]ff] [-s strategy]... [<fetch-options>] <repo> <head>...'
+USAGE='[-n | --no-stat] [--[no-]commit] [--[no-]squash] [--[no-]ff] [-s strategy]... [<fetch-options>] <repo> <head>...'
 LONG_USAGE='Fetch one or more remote refs and merge it/them into the current HEAD.'
 SUBDIRECTORY_OK=Yes
 OPTIONS_SPEC=
@@ -16,19 +16,23 @@ cd_to_toplevel
 test -z "$(git ls-files -u)" ||
        die "You are in the middle of a conflicted merge."
 
-strategy_args= no_summary= no_commit= squash= no_ff=
+strategy_args= no_stat= no_commit= squash= no_ff= log_arg= verbosity=
 curr_branch=$(git symbolic-ref -q HEAD)
 curr_branch_short=$(echo "$curr_branch" | sed "s|refs/heads/||")
 rebase=$(git config --bool branch.$curr_branch_short.rebase)
 while :
 do
        case "$1" in
-       -n|--n|--no|--no-|--no-s|--no-su|--no-sum|--no-summ|\
-               --no-summa|--no-summar|--no-summary)
-               no_summary=-n ;;
-       --summary)
-               no_summary=$1
-               ;;
+       -q|--quiet)
+               verbosity="$verbosity -q" ;;
+       -v|--verbose)
+               verbosity="$verbosity -v" ;;
+       -n|--no-stat|--no-summary)
+               no_stat=-n ;;
+       --stat|--summary)
+               no_stat=$1 ;;
+       --log|--no-log)
+               log_arg=$1 ;;
        --no-c|--no-co|--no-com|--no-comm|--no-commi|--no-commit)
                no_commit=--no-commit ;;
        --c|--co|--com|--comm|--commi|--commit)
@@ -72,11 +76,59 @@ do
        shift
 done
 
-orig_head=$(git rev-parse --verify HEAD 2>/dev/null)
-git-fetch --update-head-ok "$@" || exit 1
+error_on_no_merge_candidates () {
+       exec >&2
+       for opt
+       do
+               case "$opt" in
+               -t|--t|--ta|--tag|--tags)
+                       echo "Fetching tags only, you probably meant:"
+                       echo "  git fetch --tags"
+                       exit 1
+               esac
+       done
+
+       curr_branch=${curr_branch#refs/heads/}
+
+       echo "You asked me to pull without telling me which branch you"
+       echo "want to merge with, and 'branch.${curr_branch}.merge' in"
+       echo "your configuration file does not tell me either.  Please"
+       echo "name which branch you want to merge on the command line and"
+       echo "try again (e.g. 'git pull <repository> <refspec>')."
+       echo "See git-pull(1) for details on the refspec."
+       echo
+       echo "If you often merge with the same branch, you may want to"
+       echo "configure the following variables in your configuration"
+       echo "file:"
+       echo
+       echo "    branch.${curr_branch}.remote = <nickname>"
+       echo "    branch.${curr_branch}.merge = <remote-ref>"
+       echo "    remote.<nickname>.url = <url>"
+       echo "    remote.<nickname>.fetch = <refspec>"
+       echo
+       echo "See git-config(1) for details."
+       exit 1
+}
 
-curr_head=$(git rev-parse --verify HEAD 2>/dev/null)
-if test "$curr_head" != "$orig_head"
+test true = "$rebase" && {
+       git update-index --ignore-submodules --refresh &&
+       git diff-files --ignore-submodules --quiet &&
+       git diff-index --ignore-submodules --cached --quiet HEAD -- ||
+       die "refusing to pull with rebase: your working tree is not up-to-date"
+
+       . git-parse-remote &&
+       origin="$1"
+       test -z "$origin" && origin=$(get_default_remote)
+       reflist="$(get_remote_refs_for_fetch "$@" 2>/dev/null |
+               sed "s|refs/heads/\(.*\):|\1|")" &&
+       oldremoteref="$(git rev-parse -q --verify \
+               "refs/remotes/$origin/$reflist")"
+}
+orig_head=$(git rev-parse -q --verify HEAD)
+git fetch $verbosity --update-head-ok "$@" || exit 1
+
+curr_head=$(git rev-parse -q --verify HEAD)
+if test -n "$orig_head" && test "$curr_head" != "$orig_head"
 then
        # The fetch involved updating the current branch.
 
@@ -105,33 +157,13 @@ merge_head=$(sed -e '/    not-for-merge   /d' \
 case "$merge_head" in
 '')
        case $? in
-         0) ;;
-         1) echo >&2 "You are not currently on a branch; you must explicitly"
-            echo >&2 "specify which branch you wish to merge:"
-            echo >&2 "  git pull <remote> <branch>"
-            exit 1;;
-         *) exit $?;;
+       0) error_on_no_merge_candidates "$@";;
+       1) echo >&2 "You are not currently on a branch; you must explicitly"
+          echo >&2 "specify which branch you wish to merge:"
+          echo >&2 "  git pull <remote> <branch>"
+          exit 1;;
+       *) exit $?;;
        esac
-       curr_branch=${curr_branch#refs/heads/}
-
-       echo >&2 "You asked me to pull without telling me which branch you"
-       echo >&2 "want to merge with, and 'branch.${curr_branch}.merge' in"
-       echo >&2 "your configuration file does not tell me either.  Please"
-       echo >&2 "name which branch you want to merge on the command line and"
-       echo >&2 "try again (e.g. 'git pull <repository> <refspec>')."
-       echo >&2 "See git-pull(1) for details on the refspec."
-       echo >&2
-       echo >&2 "If you often merge with the same branch, you may want to"
-       echo >&2 "configure the following variables in your configuration"
-       echo >&2 "file:"
-       echo >&2
-       echo >&2 "    branch.${curr_branch}.remote = <nickname>"
-       echo >&2 "    branch.${curr_branch}.merge = <remote-ref>"
-       echo >&2 "    remote.<nickname>.url = <url>"
-       echo >&2 "    remote.<nickname>.fetch = <refspec>"
-       echo >&2
-       echo >&2 "See git-config(1) for details."
-       exit 1
        ;;
 ?*' '?*)
        if test -z "$orig_head"
@@ -144,12 +176,14 @@ esac
 
 if test -z "$orig_head"
 then
-       git update-ref -m "initial pull" HEAD $merge_head "" &&
+       git update-ref -m "initial pull" HEAD $merge_head "$curr_head" &&
        git read-tree --reset -u HEAD || exit 1
        exit
 fi
 
-merge_name=$(git fmt-merge-msg <"$GIT_DIR/FETCH_HEAD") || exit
-test true = "$rebase" && exec git-rebase $merge_head
-exec git-merge $no_summary $no_commit $squash $no_ff $strategy_args \
-       "$merge_name" HEAD $merge_head
+merge_name=$(git fmt-merge-msg $log_arg <"$GIT_DIR/FETCH_HEAD") || exit
+test true = "$rebase" &&
+       exec git-rebase $strategy_args --onto $merge_head \
+       ${oldremoteref:-$merge_head}
+exec git-merge $no_stat $no_commit $squash $no_ff $log_arg $strategy_args \
+       "$merge_name" HEAD $merge_head $verbosity