Address review feedback: add example, remove unnecessary comments and test files

Co-authored-by: Dunqing <29533304+Dunqing@users.noreply.github.com>

Author: Copilot

.serena/cache/rust/document_symbols_cache_v23-06-25.pkl

@@ -11,6 +11,11 @@ pub type CommentsMap = FxHashMap</* attached_to */ u32, Vec<Comment>>;
 
 /// Custom iterator that splits text on line terminators while handling CRLF as a single unit.
 /// This avoids creating empty strings between CR and LF characters.
+///
+/// # Example
+/// Standard split would turn "line1\r\nline2" into ["line1", "", "line2"] because
+/// it treats \r and \n as separate terminators. This iterator correctly produces
+/// ["line1", "line2"] by treating \r\n as a single terminator.
 struct LineTerminatorSplitter<'a> {
     text: &'a str,
     position: usize,
@@ -177,8 +182,6 @@ impl Codegen<'_> {
                 self.print_str_escaping_script_close_tag(comment_source);
             }
             CommentKind::Block => {
-                // Print block comments with our own indentation.
-                // Use custom splitter to handle CRLF correctly without allocations
                 for line in LineTerminatorSplitter::new(comment_source) {
                     if !line.starts_with("/*") {
                         self.print_indent();
@@ -213,7 +216,6 @@ impl Codegen<'_> {
             if comment.is_block() && text.contains(is_line_terminator) {
                 let mut buffer = String::with_capacity(text.len());
                 // Print block comments with our own indentation.
-                // Use custom splitter to handle CRLF correctly without extra allocations in the splitting logic
                 for line in LineTerminatorSplitter::new(&text) {
                     if !line.starts_with("/*") {
                         buffer.push('\t');