Actually, considering chomping was not done, the original answer, /^\d$/ would be correct, unlike your answer, which would never match, as there would always be the trailing newline.

The fact that $ can match just before a trailing newline makes cases like this "do what I mean".

Abigail

In reply to Re: Checking for single digit by Abigail-II
in thread Checking for single digit by Anonymous Monk

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