Merge branch 'jk/maint-break-rename-reduce-memory' into maint

diff --git a/git-merge-one-file.sh b/git-merge-one-file.sh
index 1e7727d2763e744b94f55c2056eccaab12367c9e..9c2c1b7202462370509a7bdb391982ae32564bd6 100755 (executable)
--- a/git-merge-one-file.sh
+++ b/git-merge-one-file.sh
@@ -48,10 +48,11 @@ case "${1:-.}${2:-.}${3:-.}" in
        ;;
 "..$3")
        echo "Adding $4"
-       test -f "$4" || {
+       if test -f "$4"
+       then
                echo "ERROR: untracked $4 is overwritten by the merge."
                exit 1
-       }
+       fi
        git update-index --add --cacheinfo "$7" "$3" "$4" &&
                exec git checkout-index -u -f -- "$4"
        ;;
@@ -80,6 +81,10 @@ case "${1:-.}${2:-.}${3:-.}" in
                echo "ERROR: $4: Not merging symbolic link changes."
                exit 1
                ;;
+       *,160000,*)
+               echo "ERROR: $4: Not merging conflicting submodule changes."
+               exit 1
+               ;;
        esac
 
        src2=`git-unpack-file $3`
@@ -108,6 +113,10 @@ case "${1:-.}${2:-.}${3:-.}" in
        src1=`git-unpack-file $2`
        git merge-file "$src1" "$orig" "$src2"
        ret=$?
+       msg=
+       if [ $ret -ne 0 ]; then
+               msg='content conflict'
+       fi
 
        # Create the working tree file, using "our tree" version from the
        # index, and then store the result of the merge.
@@ -115,7 +124,10 @@ case "${1:-.}${2:-.}${3:-.}" in
        rm -f -- "$orig" "$src1" "$src2"
 
        if [ "$6" != "$7" ]; then
-               echo "ERROR: Permissions conflict: $5->$6,$7."
+               if [ -n "$msg" ]; then
+                       msg="$msg, "
+               fi
+               msg="${msg}permissions conflict: $5->$6,$7"
                ret=1
        fi
        if [ "$1" = '' ]; then
@@ -123,7 +135,7 @@ case "${1:-.}${2:-.}${3:-.}" in
        fi
 
        if [ $ret -ne 0 ]; then
-               echo "ERROR: Merge conflict in $4"
+               echo "ERROR: $msg in $4"
                exit 1
        fi
        exec git update-index -- "$4"