Remove contexttags from toc anchors

scripts/create_nav.py

@@ -17,6 +17,8 @@ def heading_to_anchor(filepath, heading, anchor):
     if anchor is None:
         # The replace(' -- ', '') is needed because AsciiDoc transforms ' -- ' to ' — ' (narrow-space, em-dash, narrow-space) which then collapses down to '' when calculating the anchor
         anchor = re.sub(r'\-+', '-', re.sub(r'[^-\w]', '', heading.lower().replace(' -- ', '').replace(' ', '-').replace('.', '-')))
+        # remove any context tags that slipped into the anchor
+        anchor = re.sub(r'(strong-classcontexttag-)(rp\d+)(rp\d+strong)', '\\2', anchor)
     if filepath not in file_headings:
         file_headings[filepath] = set()
     proposed_anchor = anchor