Index: compile_rules.py
==================================================================
--- compile_rules.py
+++ compile_rules.py
@@ -448,10 +448,11 @@
     lRuleJS = copy.deepcopy(lRule)
     del lRule[-1] # tGroups positioning codes are useless for Python
     # error messages
     for aAction in lRuleJS[6]:
         if aAction[1] == "-":
+            aAction[2] = aAction[2].replace(" ", " ") # nbsp --> nnbsp
             aAction[4] = aAction[4].replace("« ", "« ").replace(" »", " »")
     # js regexes
     lRuleJS[1], lNegLookBehindRegex = regex2js( dJSREGEXES.get(lRuleJS[3], lRuleJS[1]) )
     lRuleJS.append(lNegLookBehindRegex)
     return lRuleJS