erp5_corporate_identity: downgrade heading with an attribute

Example: <h2 class="foo">bar</h2> => <h3 class="foo">bar</h3>

bt5/erp5_corporate_identity/SkinTemplateItem/portal_skins/erp5_corporate_identity/WebPage_downgradeHeaders.py

@@ -5,17 +5,15 @@ Downgrade headers in passed content by 1 or number of levels specified
 """
 import re
 
-def pushDown(level):
-  return ''.join(["h", str(level), ">"])
+REGEXP = re.compile('<h([1-6]).*>.*</h([1-6])>')
 
-for header in re.findall("<h[1-6].*</h[1-6]>", content or ""):
-  header_list = re.findall("<(h[1-6]>)", header)
-  if len(header_list):
-    tag = header_list[0] #h2>
-    key = tag[1]
-    content = content.replace(
-      header,
-      header.replace(tag, pushDown(int(key) + (downgrade or 1)))
-    )
+def pushDown(regexp_match):
+  text = '%r' % regexp_match.group()
+  start_level = regexp_match.group(1)
+  stop_level = regexp_match.group(2)
+  if (start_level == stop_level):
+    next_level = "%i" % (int(start_level) + downgrade)
+    text = '<h' + next_level + text[4:-3] + next_level + '>'
+  return text
 
-return content
+return REGEXP.sub(pushDown, content)

[Romain Courteaud]

@frequent when applying this patch on my branch, the corporate identity tests fail when comparing the new output document.

Can you confirm that the correct way for me to update the test is only to copy/paste manually the data from the test result logs?