YAZ_CHECK(tst_ccl_query(bibset, "title=.",
"@attr 5=102 @attr 1=/my/title \\\\. "));
- YAZ_CHECK(tst_ccl_query(bibset, "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 \\\\ "));
+
YAZ_CHECK(tst_ccl_query(bibset, "comb=a",
"@or @attr 4=2 @attr 1=1016 a "
"@attr 1=/my/title a "));