+ YAZ_CHECK(tst_ccl_query(bibset, "title=a?b#\"c?\"",
+ "@attr 5=102 @attr 1=/my/title a.*b.c\\\\? "));
+
+ YAZ_CHECK(tst_ccl_query(bibset, "title=\\(",
+ "@attr 5=102 @attr 1=/my/title \\\\( "));
+
+ YAZ_CHECK(tst_ccl_query(bibset, "title=.",
+ "@attr 5=102 @attr 1=/my/title \\\\. "));
+
+ YAZ_CHECK(tst_ccl_query(bibset, "title=.",
+ "@attr 5=102 @attr 1=/my/title \\\\. "));
+
+ YAZ_CHECK(tst_ccl_query(bibset, "title=\".\"",
+ "@attr 5=102 @attr 1=/my/title \\\\. "));
+
+ YAZ_CHECK(tst_ccl_query(bibset, "title=?\\?",
+ "@attr 5=102 @attr 1=/my/title .*\\\\? "));
+
+ YAZ_CHECK(tst_ccl_query(bibset, "title=\"?\\?\"",
+ "@attr 5=102 @attr 1=/my/title \\\\?\\\\? "));
+
+ YAZ_CHECK(tst_ccl_query(bibset, "title=\\\\",
+ "@attr 5=102 @attr 1=/my/title \\\\\\\\ "));
+
+ YAZ_CHECK(tst_ccl_query(bibset, "\\\\",
+ "@attr 4=2 @attr 1=1016 \\\\ "));
+