bug: quoted punctuation behaves strangely

bug: quoted punctuation behaves strangely

[Lennart Jablonka]

Consider:

	.Pq asdf .
	.Pq asdf "."

The expected output:

	(asdf).  (asdf).

Mandoc’s output:

	(asdf).  (asdf.)
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Re: bug: quoted punctuation behaves strangely

[Jan Stary]

On Mar 12 11:56:39, humm@ljabl.com wrote:
> Consider:
> 
> 	.Pq asdf .
> 	.Pq asdf "."
> 
> The expected output:
> 
> 	(asdf).  (asdf).

If I'm reading mdoc(7) right, this is what the
Delimiters section has to say on that:

        When a macro argument consists of one single input character
        considered as a delimiter, the argument gets special handling.
        This does not apply when delimiters appear in arguments
        containing more than one character.

Your "." (quotes included) contains more than one character,
so it is not a delimiter.

Also, why would you ever do this?

Jan


> Mandoc’s output:
> 
> 	(asdf).  (asdf.)
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> 
> 
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Re: bug: quoted punctuation behaves strangely

[Lennart Jablonka]

Quoth Jan Stary:
>On Mar 12 11:56:39, humm@ljabl.com wrote:
>> Consider:
>>
>> 	.Pq asdf .
>> 	.Pq asdf "."
>>
>> The expected output:
>>
>> 	(asdf).  (asdf).
>
>If I'm reading mdoc(7) right, this is what the
>Delimiters section has to say on that:
>
>        When a macro argument consists of one single input character
>        considered as a delimiter, the argument gets special handling.
>        This does not apply when delimiters appear in arguments
>        containing more than one character.
>
>Your "." (quotes included) contains more than one character,
>so it is not a delimiter.

In the troff language, a macro does not see the quotes surrounding 
an argument.  An argument can be quoted to contain spaces or 
quotes; that’s transparent to the macro.  So here, the argument 
does contain a single character and troff -mdoc treats it that 
way.  (Tested 4.4BSD-Lite2’s -mdoc, OpenBSD’s 
/usr/share/tmac/doc.tmac, and groff -mdoc.)

Further, even if that was not the case, the output would still be 
wrong:

	.Pq asdf \&.
	.Pq asdf "."

results in

	(asdf .) (asdf.)

>Also, why would you ever do this?

You wouldn’t.  And yet I did find it in the wild.
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