X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=dgit.git;a=blobdiff_plain;f=Debian%2FDgit.pm;h=112d15bb64e2c8fbc1e64f6aba4e0569f1718176;hp=f166f11b58464b7d9616579fb3af89f4ef01a41d;hb=8c58335913e7ec0465a939a9a277e7fbd0df68e0;hpb=89506141b188407123bf605d2b051f2dfa10ad4b

diff --git a/Debian/Dgit.pm b/Debian/Dgit.pm
index f166f11b..112d15bb 100644
--- a/Debian/Dgit.pm
+++ b/Debian/Dgit.pm
@@ -17,7 +17,8 @@ BEGIN {
     @EXPORT      = qw(debiantag server_branch server_ref
                       stat_exists git_for_each_ref
                       $package_re $component_re $branchprefix
-                      initdebug enabledebug printdebug debugcmd
+                      initdebug enabledebug enabledebuglevel
+                      printdebug debugcmd
                       $debugprefix *debuglevel *DEBUG
                       shellquote printcmd);
     %EXPORT_TAGS = ( policyflags => [qw(NOFFCHECK FRESHREPO)] );
@@ -91,6 +92,16 @@ sub enabledebug () {
     $debuglevel ||= 1;
 }
     
+sub enabledebuglevel ($) {
+    my ($newlevel) = @_; # may be undef (eg from env var)
+    die if $debuglevel;
+    $newlevel //= 0;
+    $newlevel += 0;
+    return unless $newlevel;
+    $debuglevel = $newlevel;
+    enabledebug();
+}
+    
 sub printdebug {
     print DEBUG $debugprefix, @_ or die $! if $debuglevel>0;
 }
@@ -100,7 +111,7 @@ sub shellquote {
     local $_;
     foreach my $a (@_) {
 	$_ = $a;
-	if (m{[^-=_./0-9a-z]}i) {
+	if (!length || m{[^-=_./0-9a-z]}i) {
 	    s{['\\]}{'\\$&'}g;
 	    push @out, "'$_'";
 	} else {