ltj-jfmglue.lua: fix determing process of character classes.

diff --git a/src/ltj-jfmglue.lua b/src/ltj-jfmglue.lua
index 9840da8..6b2fb95 100644 (file)
--- a/src/ltj-jfmglue.lua
+++ b/src/ltj-jfmglue.lua
@@ -105,7 +105,7 @@ local slow_find_char_class
 do
    slow_find_char_class = function (c, m, oc)
       local cls = ltjf_find_char_class(oc, m)
-      if not c and  cls==0 then 
+      if cls==0 then 
         return ltjf_find_char_class(-c, m), oc
       else
         return cls, oc