Merge branch 'maint'
[gitweb.git] / git-pull.sh
index 38331a861106c63bf5f421dbe03f4aafe949812e..fb9e2df9312e96ecf8ad5ab2bde4b74b979fe02e 100755 (executable)
@@ -38,11 +38,12 @@ test -z "$(git ls-files -u)" || die_conflict
 test -f "$GIT_DIR/MERGE_HEAD" && die_merge
 
 strategy_args= diffstat= no_commit= squash= no_ff= ff_only=
-log_arg= verbosity=
+log_arg= verbosity= progress= recurse_submodules=
 merge_args=
 curr_branch=$(git symbolic-ref -q HEAD)
-curr_branch_short=$(echo "$curr_branch" | sed "s|refs/heads/||")
+curr_branch_short="${curr_branch#refs/heads/}"
 rebase=$(git config --bool branch.$curr_branch_short.rebase)
+dry_run=
 while :
 do
        case "$1" in
@@ -50,6 +51,10 @@ do
                verbosity="$verbosity -q" ;;
        -v|--verbose)
                verbosity="$verbosity -v" ;;
+       --progress)
+               progress=--progress ;;
+       --no-progress)
+               progress=--no-progress ;;
        -n|--no-stat|--no-summary)
                diffstat=--no-stat ;;
        --stat|--summary)
@@ -102,7 +107,19 @@ do
        --no-r|--no-re|--no-reb|--no-reba|--no-rebas|--no-rebase)
                rebase=false
                ;;
-       -h|--h|--he|--hel|--help)
+       --recurse-submodules)
+               recurse_submodules=--recurse-submodules
+               ;;
+       --recurse-submodules=*)
+               recurse_submodules="$1"
+               ;;
+       --no-recurse-submodules)
+               recurse_submodules=--no-recurse-submodules
+               ;;
+       --d|--dr|--dry|--dry-|--dry-r|--dry-ru|--dry-run)
+               dry_run=--dry-run
+               ;;
+       -h|--h|--he|--hel|--help|--help-|--help-a|--help-al|--help-all)
                usage
                ;;
        *)
@@ -151,34 +168,10 @@ error_on_no_merge_candidates () {
                echo "You asked to pull from the remote '$1', but did not specify"
                echo "a branch. Because this is not the default configured remote"
                echo "for your current branch, you must specify a branch on the command line."
-       elif [ -z "$curr_branch" ]; then
-               echo "You are not currently on a branch, so I cannot use any"
-               echo "'branch.<branchname>.merge' in your configuration file."
-               echo "Please specify which remote branch you want to use on the command"
-               echo "line and try again (e.g. 'git pull <repository> <refspec>')."
-               echo "See git-pull(1) for details."
-       elif [ -z "$upstream" ]; then
-               echo "You asked me to pull without telling me which branch you"
-               echo "want to $op_type $op_prep, and 'branch.${curr_branch}.merge' in"
-               echo "your configuration file does not tell me, either. Please"
-               echo "specify which branch you want to use on the command line and"
-               echo "try again (e.g. 'git pull <repository> <refspec>')."
-               echo "See git-pull(1) for details."
-               echo
-               echo "If you often $op_type $op_prep the same branch, you may want to"
-               echo "use something like the following in your configuration file:"
-               echo
-               echo "    [branch \"${curr_branch}\"]"
-               echo "    remote = <nickname>"
-               echo "    merge = <remote-ref>"
-               test rebase = "$op_type" &&
-                       echo "    rebase = true"
-               echo
-               echo "    [remote \"<nickname>\"]"
-               echo "    url = <url>"
-               echo "    fetch = <refspec>"
-               echo
-               echo "See git-config(1) for details."
+       elif [ -z "$curr_branch" -o -z "$upstream" ]; then
+               . git-parse-remote
+               error_on_missing_default_upstream "pull" $op_type $op_prep \
+                       "git pull <repository> <refspec>"
        else
                echo "Your configuration specifies to $op_type $op_prep the ref '${upstream#refs/heads/}'"
                echo "from the remote, but no such ref was fetched."
@@ -195,10 +188,7 @@ test true = "$rebase" && {
                        die "updating an unborn branch with changes added to the index"
                fi
        else
-               git update-index --ignore-submodules --refresh &&
-               git diff-files --ignore-submodules --quiet &&
-               git diff-index --ignore-submodules --cached --quiet HEAD -- ||
-               die "refusing to pull with rebase: your working tree is not up-to-date"
+               require_clean_work_tree "pull with rebase" "Please commit or stash them."
        fi
        oldremoteref= &&
        . git-parse-remote &&
@@ -214,7 +204,8 @@ test true = "$rebase" && {
        done
 }
 orig_head=$(git rev-parse -q --verify HEAD)
-git fetch $verbosity --update-head-ok "$@" || exit 1
+git fetch $verbosity $progress $dry_run $recurse_submodules --update-head-ok "$@" || exit 1
+test -z "$dry_run" || exit 0
 
 curr_head=$(git rev-parse -q --verify HEAD)
 if test -n "$orig_head" && test "$curr_head" != "$orig_head"
@@ -262,10 +253,19 @@ esac
 if test -z "$orig_head"
 then
        git update-ref -m "initial pull" HEAD $merge_head "$curr_head" &&
-       git read-tree --reset -u HEAD || exit 1
+       git read-tree -m -u HEAD || exit 1
        exit
 fi
 
+if test true = "$rebase"
+then
+       o=$(git show-branch --merge-base $curr_branch $merge_head $oldremoteref)
+       if test "$oldremoteref" = "$o"
+       then
+               unset oldremoteref
+       fi
+fi
+
 merge_name=$(git fmt-merge-msg $log_arg <"$GIT_DIR/FETCH_HEAD") || exit
 case "$rebase" in
 true)
@@ -274,8 +274,8 @@ true)
        ;;
 *)
        eval="git-merge $diffstat $no_commit $squash $no_ff $ff_only"
-       eval="$eval  $log_arg $strategy_args $merge_args"
-       eval="$eval \"\$merge_name\" HEAD $merge_head $verbosity"
+       eval="$eval  $log_arg $strategy_args $merge_args $verbosity $progress"
+       eval="$eval \"\$merge_name\" HEAD $merge_head"
        ;;
 esac
 eval "exec $eval"