Update app.py

app.py

@@ -142,7 +142,8 @@ def apply_emoji_font(text, emoji_font):
 def markdown_to_pdf_content(markdown_text, render_with_bold, auto_bold_numbers, add_space_before_numbered, headings_to_fonts):
     lines = markdown_text.strip().split('\n')
     pdf_content = []
-    number_pattern = re.compile(r'^\d+\.\s')
+    # Updated pattern to match both top-level (e.g., 4.) and sub-level (e.g., 4.1, 4.2) numbers
+    number_pattern = re.compile(r'^\d+(\.\d+)*\.\s')
     heading_pattern = re.compile(r'^(#{1,4})\s+(.+)$')
     first_numbered_seen = False
     
@@ -179,9 +180,7 @@ def markdown_to_pdf_content(markdown_text, render_with_bold, auto_bold_numbers,
             if not (line.startswith("<b>") and line.endswith("</b>")):
                 if "<b>" in line and "</b>" in line:
                     line = re.sub(r'</?b>', '', line)
-                    line = f"<b>{line}</b>"
-                else:
-                    line = f"<b>{line}</b>"
+                line = f"<b>{line}</b>"
         pdf_content.append(line)
     total_lines = len(pdf_content)
     return pdf_content, total_lines
@@ -245,7 +244,7 @@ def create_pdf(markdown_text, base_font_size, render_with_bold, auto_bold_number
     lines_per_column = total_lines / num_columns if num_columns > 0 else total_lines
     current_line_count = 0
     current_column = 0
-    number_pattern = re.compile(r'^\d+\.\s')
+    number_pattern = re.compile(r'^\d+(\.\d+)*\.\s')
     for item in pdf_content:
         if current_line_count >= lines_per_column and current_column < num_columns - 1:
             current_column += 1