Edit book: When changing a paragraph to a heading if the cursor is ad…

…jacent to a paragraph tag but not inside any tags other than body, use the adjacent tag

src/calibre/gui2/tweak_book/editor/smarts/html.py

@@ -422,6 +422,14 @@ def rename_block_tag(self, editor, new_name):
  tag = find_closest_containing_block_tag(block, offset)
 
  if tag is not None:
+ if tag.name == 'body':
+ ntag = find_closest_containing_block_tag(block, offset + 1)
+ if ntag is not None and ntag.name != 'body':
+ tag = ntag
+ elif offset > 0:
+ ntag = find_closest_containing_block_tag(block, offset - 1)
+ if ntag is not None and ntag.name != 'body':
+ tag = ntag
  closing_tag = find_closing_tag(tag)
  if closing_tag is None:
  return error_dialog(editor, _('Invalid HTML'), _(