post-checkout hook, tests, and docs

diff --git a/git-merge-one-file.sh b/git-merge-one-file.sh
index 7d62d7902cb1d7cd2749091b86d532306bea89b3..1e7727d2763e744b94f55c2056eccaab12367c9e 100755 (executable)
--- a/git-merge-one-file.sh
+++ b/git-merge-one-file.sh
@@ -13,7 +13,7 @@
 #   $7 - file in branch2 mode (or empty)
 #
 # Handle some trivial cases.. The _really_ trivial cases have
-# been handled already by git-read-tree, but that one doesn't
+# been handled already by git read-tree, but that one doesn't
 # do any merges that might change the tree layout.
 
 case "${1:-.}${2:-.}${3:-.}" in
@@ -27,14 +27,15 @@ case "${1:-.}${2:-.}${3:-.}" in
                # read-tree checked that index matches HEAD already,
                # so we know we do not have this path tracked.
                # there may be an unrelated working tree file here,
-               # which we should just leave unmolested.
-               exit 0
+               # which we should just leave unmolested.  Make sure
+               # we do not have it in the index, though.
+               exec git update-index --remove -- "$4"
        fi
        if test -f "$4"; then
                rm -f -- "$4" &&
                rmdir -p "$(expr "z$4" : 'z\(.*\)/')" 2>/dev/null || :
        fi &&
-               exec git-update-index --remove -- "$4"
+               exec git update-index --remove -- "$4"
        ;;
 
 #
@@ -42,7 +43,8 @@ case "${1:-.}${2:-.}${3:-.}" in
 #
 ".$2.")
        # the other side did not add and we added so there is nothing
-       # to be done.
+       # to be done, except making the path merged.
+       exec git update-index --add --cacheinfo "$6" "$2" "$4"
        ;;
 "..$3")
        echo "Adding $4"
@@ -50,8 +52,8 @@ case "${1:-.}${2:-.}${3:-.}" in
                echo "ERROR: untracked $4 is overwritten by the merge."
                exit 1
        }
-       git-update-index --add --cacheinfo "$6$7" "$2$3" "$4" &&
-               exec git-checkout-index -u -f -- "$4"
+       git update-index --add --cacheinfo "$7" "$3" "$4" &&
+               exec git checkout-index -u -f -- "$4"
        ;;
 
 #
@@ -64,8 +66,8 @@ case "${1:-.}${2:-.}${3:-.}" in
                exit 1
        fi
        echo "Adding $4"
-       git-update-index --add --cacheinfo "$6" "$2" "$4" &&
-               exec git-checkout-index -u -f -- "$4"
+       git update-index --add --cacheinfo "$6" "$2" "$4" &&
+               exec git checkout-index -u -f -- "$4"
        ;;
 
 #
@@ -84,11 +86,11 @@ case "${1:-.}${2:-.}${3:-.}" in
        case "$1" in
        '')
                echo "Added $4 in both, but differently."
-               # This extracts OUR file in $orig, and uses git-apply to
+               # This extracts OUR file in $orig, and uses git apply to
                # remove lines that are unique to ours.
                orig=`git-unpack-file $2`
                sz0=`wc -c <"$orig"`
-               diff -u -La/$orig -Lb/$orig $orig $src2 | git-apply --no-add 
+               diff -u -La/$orig -Lb/$orig $orig $src2 | git apply --no-add
                sz1=`wc -c <"$orig"`
 
                # If we do not have enough common material, it is not
@@ -104,12 +106,12 @@ case "${1:-.}${2:-.}${3:-.}" in
        # Be careful for funny filename such as "-L" in "$4", which
        # would confuse "merge" greatly.
        src1=`git-unpack-file $2`
-       git-merge-file "$src1" "$orig" "$src2"
+       git merge-file "$src1" "$orig" "$src2"
        ret=$?
 
        # Create the working tree file, using "our tree" version from the
        # index, and then store the result of the merge.
-       git-checkout-index -f --stage=2 -- "$4" && cat "$src1" >"$4"
+       git checkout-index -f --stage=2 -- "$4" && cat "$src1" >"$4"
        rm -f -- "$orig" "$src1" "$src2"
 
        if [ "$6" != "$7" ]; then
@@ -124,7 +126,7 @@ case "${1:-.}${2:-.}${3:-.}" in
                echo "ERROR: Merge conflict in $4"
                exit 1
        fi
-       exec git-update-index -- "$4"
+       exec git update-index -- "$4"
        ;;
 
 *)