"rebase --onto A...B" replays history on the merge base between A and B

diff --git a/git-sh-setup.sh b/git-sh-setup.sh
index a44b1c74a38d6310d7a1bde969cbbcb51f977188..c41c2f7439724adc3dd13b92c86b25d254fc23b8 100755 (executable)
--- a/git-sh-setup.sh
+++ b/git-sh-setup.sh
@@ -11,11 +11,48 @@
 # exporting it.
 unset CDPATH
 
+git_broken_path_fix () {
+       case ":$PATH:" in
+       *:$1:*) : ok ;;
+       *)
+               PATH=$(
+                       SANE_TOOL_PATH="$1"
+                       IFS=: path= sep=
+                       set x $PATH
+                       shift
+                       for elem
+                       do
+                               case "$SANE_TOOL_PATH:$elem" in
+                               (?*:/bin | ?*:/usr/bin)
+                                       path="$path$sep$SANE_TOOL_PATH"
+                                       sep=:
+                                       SANE_TOOL_PATH=
+                               esac
+                               path="$path$sep$elem"
+                               sep=:
+                       done
+                       echo "$path"
+               )
+               ;;
+       esac
+}
+
+# @@BROKEN_PATH_FIX@@
+
 die() {
        echo >&2 "$@"
        exit 1
 }
 
+GIT_QUIET=
+
+say () {
+       if test -z "$GIT_QUIET"
+       then
+               printf '%s\n' "$*"
+       fi
+}
+
 if test -n "$OPTIONS_SPEC"; then
        usage() {
                "$0" -h
@@ -32,15 +69,16 @@ if test -n "$OPTIONS_SPEC"; then
                echo exit $?
        )"
 else
+       dashless=$(basename "$0" | sed -e 's/-/ /')
        usage() {
-               die "Usage: $0 $USAGE"
+               die "Usage: $dashless $USAGE"
        }
 
        if [ -z "$LONG_USAGE" ]
        then
-               LONG_USAGE="Usage: $0 $USAGE"
+               LONG_USAGE="Usage: $dashless $USAGE"
        else
-               LONG_USAGE="Usage: $0 $USAGE
+               LONG_USAGE="Usage: $dashless $USAGE
 
 $LONG_USAGE"
        fi
@@ -84,7 +122,13 @@ cd_to_toplevel () {
        cdup=$(git rev-parse --show-cdup)
        if test ! -z "$cdup"
        then
-               cd "$cdup" || {
+               # The "-P" option says to follow "physical" directory
+               # structure instead of following symbolic links.  When cdup is
+               # "../", this means following the ".." entry in the current
+               # directory instead textually removing a symlink path element
+               # from the PWD shell variable.  The "-P" behavior is more
+               # consistent with the C-style chdir used by most of Git.
+               cd -P "$cdup" || {
                        echo >&2 "Cannot chdir to $cdup, the toplevel of the working tree"
                        exit 1
                }
@@ -142,3 +186,16 @@ then
        }
        : ${GIT_OBJECT_DIRECTORY="$GIT_DIR/objects"}
 fi
+
+# Fix some commands on Windows
+case $(uname -s) in
+*MINGW*)
+       # Windows has its own (incompatible) sort and find
+       sort () {
+               /usr/bin/sort "$@"
+       }
+       find () {
+               /usr/bin/find "$@"
+       }
+       ;;
+esac