PesachZ wrote:While we're on the topic you can substitute [0-9] with /d
So a search for ^/d+$ will find any string of any length containing exclusively numbers.
For more details see RegEx Tutorial
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It's \d not /d. Backslashes are used to escape what would otherwise be normal letters. \d is any digit, \w is a word character (iirc it's [A-Za-z0-9]), \b is a word boundary (meaning a space or begin/end of string, or maybe something else)...