* fix matching backslashes, add some tests

lib/tests/test-mu-str.c

@@ -198,6 +198,7 @@ test_mu_str_process_query_term (void)
 		{ "Foo..Bar", "foo..bar" },
 		{ "Foo.Bar", "foo_bar" },
 		{ "Foo Bar", "foo_bar" },
+		{ "\\foo", "_foo" },
 		{ "subject:test@foo", "subject:test_foo" },
 		{ "xxx:test@bar", "xxx:test_bar" },
 		{ "aa$bb$cc", "aa_bb_cc" },
@@ -239,6 +240,7 @@ test_mu_str_process_term (void)
 		{ "Foo..Bar", "foo__bar" },
 		{ "Foo.Bar", "foo_bar" },
 		{ "Foo Bar", "foo_bar" },
+		{ "\\foo", "_foo" },
 		{ "subject:test@foo", "subject_test_foo" },
 		{ "xxx:test@bar", "xxx_test_bar" },
 		{ "aa$bb$cc", "aa_bb_cc" },

lib/tests/testdir2/bar/cur/mail4

@@ -13,6 +13,7 @@ Organization: http://freemail.web.de/
 Content-Type: text/plain; charset="iso-8859-1"
 Content-Transfer-Encoding: 8bit
 X-MIME-Autoconverted: from quoted-printable to 8bit by mailhost6.ladot.com id j48MScQ30791
+X-Label: \backslash
 X-UIDL: 93h!!\i<!!L)l!!%_I!!
 X-Spam-Checker-Version: SpamAssassin 3.0.2 (2004-11-16) on mindcrime
 X-Spam-Level: