Fix invalid whitespace removal around star selector

Author: GuillaumeGomez

src/css/tests.rs

@@ -325,3 +325,12 @@ fn check_weird_input() {
     assert_eq!(minify("*/**/=").unwrap().to_string(), "* =");
     assert_eq!(minify(r#"\-1"#).unwrap().to_string(), r#"\-1"#);
 }
+
+#[test]
+fn check_space_after_star() {
+    assert_eq!(minify("* .original").unwrap().to_string(), "* .original");
+    assert_eq!(
+        minify(".a * .original").unwrap().to_string(),
+        ".a * .original"
+    );
+}

src/css/token.rs

@@ -308,6 +308,10 @@ impl Token<'_> {
         matches!(*self, Token::SelectorElement(SelectorElement::Media(_)))
     }
 
+    fn is_a_selector_element(&self) -> bool {
+        matches!(*self, Token::SelectorElement(_))
+    }
+
     fn is_a_license(&self) -> bool {
         matches!(*self, Token::License(_))
     }
@@ -619,6 +623,15 @@ fn clean_tokens(mut v: Vec<Token<'_>>) -> Vec<Token<'_>> {
                 {
                     // retain the space between keywords
                     // and the space that disambiguates functions from keyword-plus-parens
+                } else if v[previous_element_index].is_a_selector_element()
+                    && matches!(v.get(i + 1), Some(Token::Char(ReservedChar::Star)))
+                {
+                    // retain the space before `*` if it's preceded by a selector.
+                } else if matches!(v[previous_element_index], Token::Char(ReservedChar::Star))
+                    && v.get(i + 1)
+                        .is_some_and(|elem| elem.is_a_selector_element())
+                {
+                    // retain the space after `*` if it's followed by a selector.
                 } else if matches!(
                     v[previous_element_index],
                     Token::Char(