[IMPR] Handle <ce>/<chem> tags as <math> aliases

Bug: T283990
Change-Id: I9c336df6e8fd43894f1132db0052887559e68e87
---
M pywikibot/textlib.py
1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/pywikibot/textlib.py b/pywikibot/textlib.py
index 78c7321..c38bde3 100644
--- a/pywikibot/textlib.py
+++ b/pywikibot/textlib.py
@@ -315,11 +315,17 @@
             # extensions
             _regex_cache[exc] = _tag_regex(exc)
             result.append(_regex_cache[exc])
-        # handle alias
+
+        # handle aliases
         if exc == 'source':
             result.append(_tag_regex('syntaxhighlight'))
         elif exc == 'syntaxhighlight':
             result.append(_tag_regex('source'))
+        elif exc == 'chem':
+            result.append(_tag_regex('ce'))
+        elif exc == 'math':
+            result.append(_tag_regex('chem'))
+            result.append(_tag_regex('ce'))
 
     return result
 

