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Re: Two trivial questions

From: Dave Kemper
Subject: Re: Two trivial questions
Date: Mon, 8 Nov 2021 15:31:14 -0600

On 11/8/21, Peter Schaffter <> wrote:
> Not all punctuation or trailing characters are ignored.
> $ printf ".ps 12.5\ \\\n[.s]\n" | groff -z
>   12.5
> $ printf ".ps 12:5\ \\\n[.s]\n" | groff -z
>   1
> $ printf ".ps 12&5\ \\\n[.s]\n" | groff -z
>   1

Right, but those are behaving as documented (logical "or" and "and"
operators, respectively).  It's groff's ignoring characters it doesn't
understand, rather than reporting them to the user, that seems a bit
dubious (but also not out of line with its historical leniency with
malformed input).

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