ensure highlight scopes are skipped properly

helix-term/src/ui/document.rs

@@ -68,10 +68,7 @@ impl<H: Iterator<Item = HighlightEvent>> Iterator for StyleIter<'_, H> {
                 HighlightEvent::HighlightEnd => {
                     self.active_highlights.pop();
                 }
-                HighlightEvent::Source { start, mut end } => {
-                    if start == end {
-                        continue;
-                    }
+                HighlightEvent::Source { mut end, .. } => {
                     let style = self
                         .active_highlights
                         .iter()
@@ -300,12 +297,12 @@ pub fn render_text<'t>(
         }
 
         // acquire the correct grapheme style
-        if char_pos >= syntax_style_span.1 {
+        while char_pos >= syntax_style_span.1 {
             syntax_style_span = syntax_styles
                 .next()
                 .unwrap_or((Style::default(), usize::MAX));
         }
-        if char_pos >= overlay_style_span.1 {
+        while char_pos >= overlay_style_span.1 {
             overlay_style_span = overlay_styles
                 .next()
                 .unwrap_or((Style::default(), usize::MAX));