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-rw-r--r--src/trans_tables_sr.lua5
1 files changed, 4 insertions, 1 deletions
diff --git a/src/trans_tables_sr.lua b/src/trans_tables_sr.lua
index 4f549c5..92162df 100644
--- a/src/trans_tables_sr.lua
+++ b/src/trans_tables_sr.lua
@@ -130,7 +130,10 @@ if not translit.done_serbian then
}
local P = lpeg.P
- local sub, upper = unicode.utf8.sub, unicode.utf8.upper
+ local utf8 = unicode and unicode.utf8 or utf or utf8
+ local sub = utf8.sub
+ local toupper = lpeg.patterns.toupper
+ local upper = function (s) return lpegmatch (toupper, s) end
local p_tocy, p_i_tocy, p_tolt, p_i_tolt