Merge branch 'nd/index-doc' into maint

[thirdparty/git.git] / git-pull.sh

diff --git a/git-pull.sh b/git-pull.sh
index 9e69ada413bd81948591a9e99287f97499573673..f6b7b8404896c15487044bcfaa64f758faeeef06 100755 (executable)
--- a/git-pull.sh
+++ b/git-pull.sh
@@ -13,14 +13,37 @@ set_reflog_action "pull $*"
 require_work_tree
 cd_to_toplevel
 
-test -z "$(git ls-files -u)" ||
-       die "You are in the middle of a conflicted merge."
+
+die_conflict () {
+    git diff-index --cached --name-status -r --ignore-submodules HEAD --
+    if [ $(git config --bool --get advice.resolveConflict || echo true) = "true" ]; then
+       die "Pull is not possible because you have unmerged files.
+Please, fix them up in the work tree, and then use 'git add/rm <file>'
+as appropriate to mark resolution, or use 'git commit -a'."
+    else
+       die "Pull is not possible because you have unmerged files."
+    fi
+}
+
+die_merge () {
+    if [ $(git config --bool --get advice.resolveConflict || echo true) = "true" ]; then
+       die "You have not concluded your merge (MERGE_HEAD exists).
+Please, commit your changes before you can merge."
+    else
+       die "You have not concluded your merge (MERGE_HEAD exists)."
+    fi
+}
+
+test -z "$(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 "$1" in
@@ -28,6 +51,8 @@ do
                verbosity="$verbosity -q" ;;
        -v|--verbose)
                verbosity="$verbosity -v" ;;
+       --progress)
+               progress=--progress ;;
        -n|--no-stat|--no-summary)
                diffstat=--no-stat ;;
        --stat|--summary)
@@ -62,13 +87,34 @@ do
                esac
                strategy_args="${strategy_args}-s $strategy "
                ;;
+       -X*)
+               case "$#,$1" in
+               1,-X)
+                       usage ;;
+               *,-X)
+                       xx="-X $(git rev-parse --sq-quote "$2")"
+                       shift ;;
+               *,*)
+                       xx=$(git rev-parse --sq-quote "$1") ;;
+               esac
+               merge_args="$merge_args$xx "
+               ;;
        -r|--r|--re|--reb|--reba|--rebas|--rebase)
                rebase=true
                ;;
        --no-r|--no-re|--no-reb|--no-reba|--no-rebas|--no-rebase)
                rebase=false
                ;;
-       -h|--h|--he|--hel|--help)
+       --recurse-submodules)
+               recurse_submodules=--recurse-submodules
+               ;;
+       --no-recurse-submodules)
+               recurse_submodules=--no-recurse-submodules
+               ;;
+       --d|--dr|--dry|--dry-|--dry-r|--dry-ru|--dry-run)
+               dry_run=--dry-run
+               ;;
+       -h|--h|--he|--hel|--help|--help-|--help-a|--help-al|--help-all)
                usage
                ;;
        *)
@@ -161,10 +207,7 @@ test true = "$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 &&
@@ -180,7 +223,8 @@ 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"
@@ -232,9 +276,25 @@ then
        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
-test true = "$rebase" &&
-       exec git-rebase $diffstat $strategy_args --onto $merge_head \
-       ${oldremoteref:-$merge_head}
-exec git-merge $diffstat $no_commit $squash $no_ff $ff_only $log_arg $strategy_args \
-       "$merge_name" HEAD $merge_head $verbosity
+case "$rebase" in
+true)
+       eval="git-rebase $diffstat $strategy_args $merge_args"
+       eval="$eval --onto $merge_head ${oldremoteref:-$merge_head}"
+       ;;
+*)
+       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"
+       ;;
+esac
+eval "exec $eval"