add * as allowed variant characters

oxide/crates/core/src/parser.rs

@@ -412,7 +412,7 @@ impl<'a> Extractor<'a> {
             }
 
             // Allowed first characters.
-            b'@' | b'!' | b'-' | b'<' | b'>' | b'0'..=b'9' | b'a'..=b'z' | b'A'..=b'Z' => {
+            b'@' | b'!' | b'-' | b'<' | b'>' | b'0'..=b'9' | b'a'..=b'z' | b'A'..=b'Z' | b'*' => {
                 // TODO: A bunch of characters that we currently support but maybe we only want it behind
                 // a flag. E.g.: '<sm'
                 // | '$' | '^' | '_'
@@ -473,7 +473,7 @@ impl<'a> Extractor<'a> {
             b'%' => return ParseAction::Skip,
 
             // < and > can only be part of a variant and only be the first or last character
-            b'<' | b'>' => {
+            b'<' | b'>' | b'*' => {
                 // Can only be the first or last character
                 // E.g.:
                 // - <sm:underline
@@ -797,6 +797,15 @@ mod test {
         assert_eq!(candidates, vec!["hover:underline"]);
     }
 
+    #[test]
+    fn it_can_parse_start_variants() {
+        let candidates = run("*:underline", false);
+        assert_eq!(candidates, vec!["*:underline"]);
+
+        let candidates = run("hover:*:underline", false);
+        assert_eq!(candidates, vec!["hover:*:underline"]);
+    }
+
     #[test]
     fn it_can_parse_simple_candidates_with_stacked_variants() {
         let candidates = run("focus:hover:underline", false);