git-p4: Unset P4DIFF environment variable when using 'p4 -du diff'

diff --git a/GIT-VERSION-GEN b/GIT-VERSION-GEN
index 3c0032cec592a765692234f1cba47dfdcc3a9200..6ddf04d2161e5fd959c2fd69a7331520e8075d98 100755 (executable)
--- a/GIT-VERSION-GEN
+++ b/GIT-VERSION-GEN
@@ -1,7 +1,7 @@
 #!/bin/sh
 
 GVF=GIT-VERSION-FILE
-DEF_VER=v1.5.3.GIT
+DEF_VER=v1.5.4.GIT
 
 LF='
 '
@@ -15,7 +15,9 @@ elif test -d .git &&
        VN=$(git describe --abbrev=4 HEAD 2>/dev/null) &&
        case "$VN" in
        *$LF*) (exit 1) ;;
-       v[0-9]*) : happy ;;
+       v[0-9]*)
+               test -z "$(git diff-index --name-only HEAD)" ||
+               VN="$VN-dirty" ;;
        esac
 then
        VN=$(echo "$VN" | sed -e 's/-/./g');
@@ -25,14 +27,6 @@ fi
 
 VN=$(expr "$VN" : v*'\(.*\)')
 
-dirty=$(sh -c 'git diff-index --name-only HEAD' 2>/dev/null) || dirty=
-case "$dirty" in
-'')
-       ;;
-*)
-       VN="$VN-dirty" ;;
-esac
-
 if test -r $GVF
 then
        VC=$(sed -e 's/^GIT_VERSION = //' <$GVF)