Index: gc_core/js/lang_core/gc_functions.js
==================================================================
--- gc_core/js/lang_core/gc_functions.js
+++ gc_core/js/lang_core/gc_functions.js
@@ -261,19 +261,16 @@
     }
     // search sPattern
     return lMorph.some(sMorph  =>  (sMorph.search(sPattern) !== -1));
 }
 
-function g_morph0 (oToken, sPattern, sNegPattern="", nLeft=null, nRight=null, bMemorizeMorph=true) {
+function g_morph0 (oToken, sPattern, sNegPattern="", nLeft=null, nRight=null) {
     // analyse a token, return True if <sNegPattern> not in morphologies and <sPattern> in morphologies
     let lMorph;
     if (nLeft !== null) {
         let sValue = (nRight !== null) ? oToken["sValue"].slice(nLeft, nRight) : oToken["sValue"].slice(nLeft);
         lMorph = gc_engine.oSpellChecker.getMorph(sValue);
-        if (bMemorizeMorph) {
-            oToken["lMorph"] = lMorph;
-        }
     } else {
         lMorph = gc_engine.oSpellChecker.getMorph(oToken["sValue"]);
     }
     if (lMorph.length == 0) {
         return false;

Index: gc_core/py/lang_core/gc_functions.py
==================================================================
--- gc_core/py/lang_core/gc_functions.py
+++ gc_core/py/lang_core/gc_functions.py
@@ -234,16 +234,14 @@
     # search sPattern
     zPattern = re.compile(sPattern)
     return any(zPattern.search(sMorph)  for sMorph in lMorph)
 
 
-def g_morph0 (dToken, sPattern, sNegPattern="", nLeft=None, nRight=None, bMemorizeMorph=True):
+def g_morph0 (dToken, sPattern, sNegPattern="", nLeft=None, nRight=None):
     "analyse a token, return True if <sNegPattern> not in morphologies and <sPattern> in morphologies (disambiguation off)"
     if nLeft is not None:
         lMorph = _oSpellChecker.getMorph(dToken["sValue"][slice(nLeft, nRight)])
-        if bMemorizeMorph:
-            dToken["lMorph"] = lMorph
     else:
         lMorph = _oSpellChecker.getMorph(dToken["sValue"])
     if not lMorph:
         return False
     # check negative condition