introduce "extensions" form of core.repositoryformatversion

diff --git a/GIT-VERSION-GEN b/GIT-VERSION-GEN
index 0a5135c05df7f1e5a01dba0157d0986060225096..bfb715d3c896bea3f6eba7da43fabe4370530efa 100755 (executable)
--- a/GIT-VERSION-GEN
+++ b/GIT-VERSION-GEN
@@ -1,7 +1,7 @@
 #!/bin/sh
 
 GVF=GIT-VERSION-FILE
-DEF_VER=v1.7.9.5
+DEF_VER=v2.4.0.GIT
 
 LF='
 '
@@ -11,8 +11,8 @@ LF='
 if test -f version
 then
        VN=$(cat version) || VN="$DEF_VER"
-elif test -d .git -o -f .git &&
-       VN=$(git describe --match "v[0-9]*" --abbrev=4 HEAD 2>/dev/null) &&
+elif test -d ${GIT_DIR:-.git} -o -f .git &&
+       VN=$(git describe --match "v[0-9]*" --abbrev=7 HEAD 2>/dev/null) &&
        case "$VN" in
        *$LF*) (exit 1) ;;
        v[0-9]*)