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Meanwhile, such "numbers" are still evaluated as invalid ones:
QMS>w $isvalidnum(txt)
0Therefore, why the expression " if ("_txt_")" is evaluated as a valid one?
Not to mention that an attempt to execute it provides usual <MAXNUMBER> error.
the first letter becomes the last letter, the second letter becomes the second-to-last letter, and so on
This definition means string reverse rather than rotation, while you apparently meant right (or clockwise) string rotation which is:
1st character becomes the 2nd, last ones becomes the 1st, repeat until the first string will become equal to the second string. As to your sample:
hello -> ohell -> lohel -> llohe
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My question became a subject for investigation by WRC; let us wait for the results.