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diff --git a/modules/string/macros/eval.sci b/modules/string/macros/eval.sci
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+// Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
+// Copyright (C) INRIA -
+// Copyright (C) DIGITEO - 2010 - Allan CORENT
+//
+// 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 _h = eval(z)
+    // Syntax :  H = eval(Z)
+    // returns the evaluation of the matrix of character strings Z.
+    // Example: a=1; b=2; Z=['a','b'] ; eval(Z) returns the matrix [1,2];
+    //!
+
+    _h = [];
+    [mz, nz] = size(z);
+    if mz * nz > 1 then
+        str = [];
+        for l = 1:mz, for k = 1:nz,
+                str = [str; "%_h(" + string(l) + ", " + string(k) + ")=" + z(l,k)];
+            end
+        end
+    else
+        str = "%_h = " + z;
+    end
+    %_h = [];
+    deff("[%_h] = %eval();", str);
+    _h = %eval();
+endfunction