allow escaped non-alphanumeric bytes in media queries

src/ast/stmt.rs

@@ -96,6 +96,7 @@ pub(crate) struct AstEach {
 #[derive(Debug, Clone)]
 pub(crate) struct AstMedia {
     pub query: Interpolation,
+    pub query_span: Span,
     pub body: Vec<AstStmt>,
     pub span: Span,
 }

src/evaluate/visitor.rs

@@ -1222,10 +1222,14 @@ impl<'a> Visitor<'a> {
         Some(queries)
     }
 
-    fn visit_media_queries(&mut self, queries: Interpolation) -> SassResult<Vec<CssMediaQuery>> {
+    fn visit_media_queries(
+        &mut self,
+        queries: Interpolation,
+        span: Span,
+    ) -> SassResult<Vec<CssMediaQuery>> {
         let resolved = self.perform_interpolation(queries, true)?;
 
-        CssMediaQuery::parse_list(&resolved, self.span_before)
+        CssMediaQuery::parse_list(&resolved, span)
     }
 
     fn visit_media_rule(&mut self, media_rule: AstMedia) -> SassResult<Option<Value>> {
@@ -1237,7 +1241,7 @@ impl<'a> Visitor<'a> {
                 .into());
         }
 
-        let queries1 = self.visit_media_queries(media_rule.query)?;
+        let queries1 = self.visit_media_queries(media_rule.query, media_rule.query_span)?;
         // todo: superfluous clone?
         let queries2 = self.media_queries.clone();
         let merged_queries = queries2

src/parse/base.rs

@@ -387,7 +387,6 @@ pub(crate) trait BaseParser<'a> {
         while let Some(tok) = self.toks().peek() {
             match tok.kind {
                 '\\' => {
-                    self.toks_mut().next();
                     buffer.push_str(&self.parse_escape(true)?);
                     wrote_newline = false;
                 }

src/parse/stylesheet.rs

@@ -981,12 +981,15 @@ pub(crate) trait StylesheetParser<'a>: BaseParser<'a> + Sized {
     }
 
     fn parse_media_rule(&mut self, start: usize) -> SassResult<AstStmt> {
+        let query_start = self.toks().cursor();
         let query = self.parse_media_query_list()?;
+        let query_span = self.toks_mut().span_from(query_start);
 
         let body = self.with_children(Self::parse_statement)?.node;
 
         Ok(AstStmt::Media(AstMedia {
             query,
+            query_span,
             body,
             span: self.toks_mut().span_from(start),
         }))

tests/media.rs

@@ -561,6 +561,15 @@ test!(
     }",
     "@media (url) {\n  a {\n    color: red;\n  }\n}\n"
 );
+test!(
+    escaped_nullbyte_in_query,
+    r#"@media (min-width:\0) {
+        a {
+            color: red;
+        }
+    }"#,
+    "@media (min-width: \\0 ) {\n  a {\n    color: red;\n  }\n}\n"
+);
 error!(
     media_query_has_quoted_closing_paren,
     r#"@media ('a)'w) {