+# A wrapper around normalize that handles special cases (cf. bug 3313)
+def normalize(form, text):
+ # do not normalize OHM, ANGSTROM
+ keep_characters = [0x2126,0x212b]
+ result = ''
+ convert = ''
+ for i in text:
+ if ord(i) in keep_characters:
+ if len(convert) > 0:
+ result = result + unicodedata.normalize(form, convert)
+ convert = ''
+ result = result + i
+ else:
+ convert = convert + i
+ if len(convert) > 0:
+ result = result + unicodedata.normalize(form, convert)
+ return result
+
+