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-rw-r--r--lexlua/prolog.lua2
1 files changed, 1 insertions, 1 deletions
diff --git a/lexlua/prolog.lua b/lexlua/prolog.lua
index d12b5709c..f98489780 100644
--- a/lexlua/prolog.lua
+++ b/lexlua/prolog.lua
@@ -26,7 +26,7 @@
local lexer = require('lexer')
local token, word_match = lexer.token, lexer.word_match
-local P, R, S, B, V, C = lpeg.P, lpeg.R, lpeg.S, lpeg.B, lpeg.V, lpeg.C
+local P, S, B, V, C = lpeg.P, lpeg.S, lpeg.B, lpeg.V, lpeg.C
local lex = lexer.new('prolog')