Index: gc_core/js/str_transform.js
==================================================================
--- gc_core/js/str_transform.js
+++ gc_core/js/str_transform.js
@@ -1,60 +1,32 @@
 //// STRING TRANSFORMATION
 
-var dSimilarChars = new Map ([
-    ["a", "aàâáä"],
-    ["à", "aàâáä"],
-    ["â", "aàâáä"],
-    ["á", "aàâáä"],
-    ["ä", "aàâáä"],
-    ["c", "cç"],
-    ["ç", "cç"],
-    ["e", "eéêèë"],
-    ["é", "eéêèë"],
-    ["ê", "eéêèë"],
-    ["è", "eéêèë"],
-    ["ë", "eéêèë"],
-    ["i", "iîïíì"],
-    ["î", "iîïíì"],
-    ["ï", "iîïíì"],
-    ["í", "iîïíì"],
-    ["ì", "iîïíì"],
-    ["o", "oôóòö"],
-    ["ô", "oôóòö"],
-    ["ó", "oôóòö"],
-    ["ò", "oôóòö"],
-    ["ö", "oôóòö"],
-    ["u", "uûùüú"],
-    ["û", "uûùüú"],
-    ["ù", "uûùüú"],
-    ["ü", "uûùüú"],
-    ["ú", "uûùüú"]
-]);
-
 // Note: 48 is the ASCII code for "0"
 
-// Suffix only
-function getStemFromSuffixCode (sFlex, sSfxCode) {
-    if (sSfxCode == "0") {
-        return sFlex;
-    }
-    return sSfxCode[0] == '0' ? sFlex + sSfxCode.slice(1) : sFlex.slice(0, -(sSfxCode.charCodeAt(0)-48)) + sSfxCode.slice(1);
-}
-
-// Prefix and suffix
-function getStemFromAffixCode (sFlex, sAffCode) {
-    if (sAffCode == "0") {
-        return sFlex;
-    }
-    if (!sAffCode.includes("/")) {
-        return "# error #";
-    }
-    var [sPfxCode, sSfxCode] = sAffCode.split('/');
-    sFlex = sPfxCode.slice(1) + sFlex.slice(sPfxCode.charCodeAt(0)-48);
-    return sSfxCode[0] == '0' ? sFlex + sSfxCode.slice(1) : sFlex.slice(0, -(sSfxCode.charCodeAt(0)-48)) + sSfxCode.slice(1);
+var str_transform = {
+    getStemFromSuffixCode: function (sFlex, sSfxCode) {
+        // Suffix only
+        if (sSfxCode == "0") {
+            return sFlex;
+        }
+        return sSfxCode[0] == '0' ? sFlex + sSfxCode.slice(1) : sFlex.slice(0, -(sSfxCode.charCodeAt(0)-48)) + sSfxCode.slice(1);
+    },
+    
+    getStemFromAffixCode: function (sFlex, sAffCode) {
+        // Prefix and suffix
+        if (sAffCode == "0") {
+            return sFlex;
+        }
+        if (!sAffCode.includes("/")) {
+            return "# error #";
+        }
+        let [sPfxCode, sSfxCode] = sAffCode.split('/');
+        sFlex = sPfxCode.slice(1) + sFlex.slice(sPfxCode.charCodeAt(0)-48);
+        return sSfxCode[0] == '0' ? sFlex + sSfxCode.slice(1) : sFlex.slice(0, -(sSfxCode.charCodeAt(0)-48)) + sSfxCode.slice(1);
+    }
 }
 
 
 if (typeof(exports) !== 'undefined') {
-    exports.getStemFromSuffixCode = getStemFromSuffixCode;
-    exports.getStemFromAffixCode = getStemFromAffixCode;
+    exports.getStemFromSuffixCode = str_transform.getStemFromSuffixCode;
+    exports.getStemFromAffixCode = str_transform.getStemFromAffixCode;
 }