From: Kristaps Dzonsons <kristaps@bsd.lv>
To: tech@mdocml.bsd.lv
Cc: Ingo Schwarze <schwarze@usta.de>, Jason McIntyre <jmc@cava.myzen.co.uk>
Subject: Re: [PATCH] \N'nnn' protection.
Date: Sun, 01 May 2011 01:18:51 +0200 [thread overview]
Message-ID: <4DBC98DB.2070204@bsd.lv> (raw)
In-Reply-To: <20110430225932.GB9889@iris.usta.de>
>> Enclosed is a patch to limit possible \N'nnn' escapes. \N
>> transforms the number 'nnn' into its character representation and is
>> marked as "for backwards compatibility" in mandoc_char(7).
>>
>> I can only find manuals using this for the double-quote \N'34', so
>> this seems safe, but maybe one of you knows of crazy \N usage that
>> would inspire me to re-think.
>
> None known, and little wonder, as it would be a bad idea because it's
> inherently non-portable even among systems supporting \N.
>
>> However, throwing, e.g., the \b
>> character in there will cause at least -Tps and -Tpdf to puke.
>>
>> Thoughts?
>
> Maybe isprint(3)?
Ingo,
That'll do it. I wasn't sure if "printable characters including the
space" meant "including whitespace", i.e., newlines. However, I checked
on BSD, Linux, and Mac, and it seems that this is not the case.
Thus, I'll check in isprint() tomorrow.
Thanks!
Kristaps
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prev parent reply other threads:[~2011-04-30 23:19 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-30 22:37 Kristaps Dzonsons
2011-04-30 22:59 ` Ingo Schwarze
2011-04-30 23:18 ` Kristaps Dzonsons [this message]
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