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-rw-r--r--src/PGF/Macros.hs6
1 files changed, 5 insertions, 1 deletions
diff --git a/src/PGF/Macros.hs b/src/PGF/Macros.hs
index 9b768cd5f..b3847d4a0 100644
--- a/src/PGF/Macros.hs
+++ b/src/PGF/Macros.hs
@@ -140,4 +140,8 @@ combinations t = case t of
aa:uu -> [a:u | a <- aa, u <- combinations uu]
isLiteralCat :: CId -> Bool
-isLiteralCat = (`elem` [mkCId "String", mkCId "Float", mkCId "Int"])
+isLiteralCat = (`elem` [cidString, cidFloat, cidInt])
+
+cidString = mkCId "String"
+cidInt = mkCId "Int"
+cidFloat = mkCId "Float"