You could create a regex that checks the string for the characters you want to allow, e.g.:

sub isStrOK {
    return $_[0] =~ /\A[\s\w]+\z/;
}

[download]

The above's not intended to be exhaustive for allowable characters, but only an example.

In reply to Re: Detecting if a string is a regular expression by Kenosis
in thread Detecting if a string is a regular expression by smontsar

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