X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;ds=sidebyside;f=git-send-email.perl;h=d508f83349b57ac2e7148f090e2abbf0a398fce4;hb=3c2eb80f;hp=8ce6f1fe57579201c09cf960caed98d330ab2bbb;hpb=3eb1e8ee1f968e9bb5ade30f17d1f49396b4c81c;p=git.git

diff --git a/git-send-email.perl b/git-send-email.perl
index 8ce6f1fe5..d508f8334 100755
--- a/git-send-email.perl
+++ b/git-send-email.perl
@@ -654,13 +654,17 @@ if (!@to) {
 }
 
 sub expand_aliases {
-	my @cur = @_;
-	my @last;
-	do {
-		@last = @cur;
-		@cur = map { $aliases{$_} ? @{$aliases{$_}} : $_ } @last;
-	} while (join(',',@cur) ne join(',',@last));
-	return @cur;
+	return map { expand_one_alias($_) } @_;
+}
+
+my %EXPANDED_ALIASES;
+sub expand_one_alias {
+	my $alias = shift;
+	if ($EXPANDED_ALIASES{$alias}) {
+		die "fatal: alias '$alias' expands to itself\n";
+	}
+	local $EXPANDED_ALIASES{$alias} = 1;
+	return $aliases{$alias} ? expand_aliases(@{$aliases{$alias}}) : $alias;
 }
 
 @to = expand_aliases(@to);