grep bug involving carets within lists

[Gilbert C Healton]

    grep --version
    grep (GNU grep) 2.4.2

Any use of caret (^) within [] list processing results in matches.
Try the following on any file that does not contain any carets but
does contain a letter "e". Digits are NOT necessary. In fact a file
without digits and carets shows the bug better.

        grep 'e[0-9^]'
        grep 'e[0-9\^]'

The above will match on ANY LINE matching /e./.

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