From a2b5961f647f1f9677d11fb5ebe7d1514fb6d1c6 Mon Sep 17 00:00:00 2001
From: Philipp Gesang <phg@phi-gamma.net>
Date: Sun, 21 Nov 2021 20:14:40 +0100
Subject: fix references to unicode apis

Where the hell is unicode.upper?
---
 src/trans_tables_sr.lua | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'src/trans_tables_sr.lua')

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
 
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