hval: only perform one substitution when obfuscating

Only one substitution character is necessary when obfuscating
email addresses.

1 files changed, 2 insertions, 0 deletions

diff --git a/t/hval.t b/t/hval.t
index dcbd8382..a3712666 100644
--- a/t/hval.t
+++ b/t/hval.t
@@ -17,6 +17,7 @@ hello@example.comm
 hello@example.com
 meta@public-inbox.org
 test@public-inbox.org
+test@a.b.c.org
 EOF
 
 PublicInbox::Hval::obfuscate_addrs($ibx, $html);
@@ -26,6 +27,7 @@ hello@example•comm
 hello@example.com
 meta@public-inbox.org
 test@public-inbox•org
+test@a•b.c.org
 EOF
 
 is($html, $exp, 'only obfuscated relevant addresses');