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diff --git a/modules/string/macros/rhs2code.sci b/modules/string/macros/rhs2code.sci
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+// Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
+// Copyright (C) INRIA - Vincent Couvert
+//
+// This file must be used under the terms of the CeCILL.
+// This source file is licensed as described in the file COPYING, which
+// you should have received as part of this distribution.  The terms
+// are also available at
+// http://www.cecill.info/licences/Licence_CeCILL_V2.1-en.txt
+
+
+function C=rhs2code(rhs)
+    // Translate rhs list of an instruction to macro code (called by tree2code)
+    // Input:
+    // - rhs: list of rhs arguments
+    // Output:
+    // - C: Scilab code corresponding to rhs
+    // V.C.
+
+    n=size(rhs)
+
+    C=""
+    if typeof(rhs)<>"list" then
+        C=expression2code(rhs)
+    else
+        for k=1:n
+            therhs = expression2code(rhs(k));
+            if k==1 then
+                C = therhs;
+            else
+                if therhs == "(EOL)" then
+                    C = [C;""];
+                else
+                    if C($)=="" then
+                        // Previous rhs was a EOL
+                        C = [C(1:($-2));
+                        C($-1)+"..";
+                        C($) + therhs(1);
+                        therhs(2:$)];
+                    else
+                        C = [C(1:($-1));
+                        C($) + "," + therhs(1);
+                        therhs(2:$)];
+                    end
+                end
+            end
+        end
+    end
+
+
+endfunction