Try
^[-+]?0[Xx][[:xdigit:]]++(?![.G-Zg-z])
Note the additional '+'. This ensures that once it has matched the xdigits,
it does not release any of them.
Regards,
Philip
On Mon, 24 May 2021 at 04:33, Peng Yu via Pcre-dev <pcre-dev@???>
wrote:
> I use the following regex.
>
> ^[-+]?0[Xx][[:xdigit:]]+(?![.G-Zg-z])
>
> and the following string
>
> 0x10g
>
> on using PCRE.
>
> https://regex101.com/
>
> It matches 0x1. I want it to be no match. Is there a way to modify the
> regex so that only matches valid hex numbers? Thanks.
>
> --
> Regards,
> Peng
>
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