Improve the 'Coercing non-XML name' warning (html5lib#418)

Ms2ger · gsnedders · commit 4b2275497b62 · 2019-04-26T13:50:52.000+01:00
This can be helpful in finding the code triggering the warning.
diff --git a/html5lib/_ihatexml.py b/html5lib/_ihatexml.py
@@ -254,15 +254,15 @@ def toXmlName(self, name):
         nameRest = name[1:]
         m = nonXmlNameFirstBMPRegexp.match(nameFirst)
         if m:
-            warnings.warn("Coercing non-XML name", DataLossWarning)
+            warnings.warn("Coercing non-XML name: %s" % name, DataLossWarning)
             nameFirstOutput = self.getReplacementCharacter(nameFirst)
         else:
             nameFirstOutput = nameFirst
 
         nameRestOutput = nameRest
         replaceChars = set(nonXmlNameBMPRegexp.findall(nameRest))
         for char in replaceChars:
-            warnings.warn("Coercing non-XML name", DataLossWarning)
+            warnings.warn("Coercing non-XML name: %s" % name, DataLossWarning)
             replacement = self.getReplacementCharacter(char)
             nameRestOutput = nameRestOutput.replace(char, replacement)
         return nameFirstOutput + nameRestOutput
