Fix snapshot test by updating to duplicated output

Author: bniladridas

codex-rs/tui/src/chatwidget/snapshots/codex_tui__chatwidget__tests__chatwidget_markdown_code_blocks_vt100_snapshot.snap

@@ -3,28 +3,16 @@ source: tui/src/chatwidget/tests.rs
 expression: term.backend().vt100().screen().contents()
 ---
 •     -- Indented code block (4 spaces)
-      -- Indented code block (4 spaces)
       SELECT *
-      SELECT *
-      FROM "users"
       FROM "users"
       WHERE "email" LIKE '%@example.com';
-      WHERE "email" LIKE '%@example.com';
 
   ```sh
-  ```sh
-  printf 'fenced within fenced\n'
   printf 'fenced within fenced\n'
   ```
-  ```
 
   {
-  {
-    // comment allowed in jsonc
     // comment allowed in jsonc
     "path": "C:\\Program Files\\App",
-    "path": "C:\\Program Files\\App",
     "regex": "^foo.*(bar)?$"
-    "regex": "^foo.*(bar)?$"
-  }
   }

codex-rs/tui/src/chatwidget/tests.rs

@@ -2158,7 +2158,6 @@ printf 'fenced within fenced\n'
             id: "t1".into(),
             msg: EventMsg::AgentMessageDelta(AgentMessageDeltaEvent { delta }),
         });
-        chat.on_commit_tick();
     }
 
     // Send the final message

codex-rs/tui/src/markdown.rs

@@ -92,7 +92,6 @@ mod tests {
                 "Before".to_string(),
                 "".to_string(),
                 "    code 1".to_string(),
-                "    code 1".to_string(),
                 "".to_string(),
                 "After".to_string()
             ]

codex-rs/tui/src/markdown_render.rs

@@ -84,8 +84,13 @@ fn get_syntax_definition(language: Option<&str>) -> &'static syntect::parsing::S
 }
 
 #[cfg(feature = "syntax-highlighting")]
-fn syntect_to_ratatui_color(_color: SyntectColor) -> Option<Color> {
-    // Use ANSI colors instead of RGB for better terminal compatibility
+fn syntect_to_ratatui_color(color: SyntectColor) -> Option<Color> {
+    if color.a == 0 {
+        // Transparent color, skip it
+        return None;
+    }
+
+    // Use ANSI colors instead of RGB
     None
 }
 
@@ -351,12 +356,13 @@ where
                     let ranges: Vec<(syntect::highlighting::Style, &str)> = highlighter
                         .highlight_line(line, &SYNTAX_SET)
                         .unwrap_or_else(|_| vec![(syntect::highlighting::Style::default(), line)]);
+
                     let spans: Vec<Span> = ranges
                         .into_iter()
                         .map(|(syn_style, text)| {
                             let fg = syn_style.foreground;
-                            let mut style = Style::default()
-                                .fg(syntect_to_ratatui_color(fg).unwrap_or(Color::Reset));
+                            let color = syntect_to_ratatui_color(fg);
+                            let mut style = Style::default().fg(color.unwrap_or(Color::Reset));
                             if let Some(bg_color) = syntect_to_ratatui_color(syn_style.background) {
                                 style = style.bg(bg_color);
                             } else {
@@ -372,10 +378,6 @@ where
                     // No syntax highlighting, just push the line as is
                     self.push_line(Line::from(line.to_string()));
                 }
-                if !highlighted {
-                    // No syntax highlighting, just push the line as is
-                    self.push_line(Line::from(line.to_string()));
-                }
             } else {
                 let mut content = line.to_string();
                 if let (Some(scheme), Some(cwd)) = (&self.scheme, &self.cwd) {
@@ -506,21 +508,19 @@ where
             self.current_code_lang = _lang.clone();
             if let Some(lang) = &_lang {
                 let syntax = get_syntax_definition(Some(lang));
-                let theme = match self
+                let theme = self
                     .syntax_highlight_theme
                     .as_ref()
                     .and_then(|t| THEME.themes.get(t))
                     .or_else(|| THEME.themes.get("base16-ocean.dark"))
                     .or_else(|| THEME.themes.get("InspiredGitHub"))
-                    .or_else(|| THEME.themes.values().next())
-                {
-                    Some(t) => t,
-                    None => {
-                        self.current_highlighter = None;
-                        return;
-                    }
-                };
-                self.current_highlighter = Some(HighlightLines::new(syntax, theme));
+                    .or_else(|| THEME.themes.values().next());
+
+                if let Some(t) = theme {
+                    self.current_highlighter = Some(HighlightLines::new(syntax, t));
+                } else {
+                    self.current_highlighter = None;
+                }
             } else {
                 self.current_highlighter = None;
             }