fixed link in documentation of diff-options

diff --git a/git-sh-setup.sh b/git-sh-setup.sh
index c51985e4c36022a1f58146e49cc82336c39df05a..3c325fd1339608d681d3485aa37647d9ac734037 100755 (executable)
--- a/git-sh-setup.sh
+++ b/git-sh-setup.sh
@@ -6,7 +6,7 @@
 # it dies.
 
 # Having this variable in your environment would break scripts because
-# you would cause "cd" to be be taken to unexpected places.  If you
+# you would cause "cd" to be taken to unexpected places.  If you
 # like CDPATH, define it for your interactive shell sessions without
 # exporting it.
 unset CDPATH
@@ -29,7 +29,8 @@ set_reflog_action() {
 }
 
 git_editor() {
-       GIT_EDITOR=${GIT_EDITOR:-$(git config core.editor || echo ${VISUAL:-${EDITOR}})}
+       : "${GIT_EDITOR:=$(git config core.editor)}"
+       : "${GIT_EDITOR:=${VISUAL:-${EDITOR}}}"
        case "$GIT_EDITOR,$TERM" in
        ,dumb)
                echo >&2 "No editor specified in GIT_EDITOR, core.editor, VISUAL,"
@@ -40,7 +41,7 @@ git_editor() {
                exit 1
                ;;
        esac
-       "${GIT_EDITOR:-vi}" "$1"
+       eval "${GIT_EDITOR:=vi}" '"$@"'
 }
 
 is_bare_repository () {
@@ -59,8 +60,7 @@ cd_to_toplevel () {
 }
 
 require_work_tree () {
-       test $(git rev-parse --is-inside-work-tree) = true &&
-       test $(git rev-parse --is-inside-git-dir) = false ||
+       test $(git rev-parse --is-inside-work-tree) = true ||
        die "fatal: $0 cannot be used without a working tree."
 }
 
@@ -116,6 +116,16 @@ then
                exit $exit
        }
 else
-       GIT_DIR=$(git rev-parse --git-dir) || exit
+       GIT_DIR=$(git rev-parse --git-dir) || {
+           exit=$?
+           echo >&2 "Failed to find a valid git directory."
+           exit $exit
+       }
 fi
+
+test -n "$GIT_DIR" && GIT_DIR=$(cd "$GIT_DIR" && pwd) || {
+    echo >&2 "Unable to determine absolute path of git directory"
+    exit 1
+}
+
 : ${GIT_OBJECT_DIRECTORY="$GIT_DIR/objects"}