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Date: Tue, 1 Jun 2010 14:09:19 +0200
From: Ulrich =?utf-8?B?U3DDtnJsZWlu?= <uqs@spoerlein.net>
To: tech@mdocml.bsd.lv
Subject: Re: roff conditionals inside .Bd
Message-ID: <20100601120919.GH91631@acme.spoerlein.net>
References: <20100601101033.GE91631@acme.spoerlein.net>
 <4C04F717.1090300@bsd.lv>
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On Tue, 01.06.2010 at 14:03:35 +0200, Kristaps Džonsons wrote:
> > the .if n/t support is really nice, but I have one mdoc page that still
> > barfs, as the .if is used inside .Bd. Markup looks like this:
> > 
> > The
> > .Fn erf
> > and the
> > .Fn erff
> > functions calculate the error function of x; where
> > .Bd -ragged -offset indent
> > .if n \{\
> > erf(x) = 2/sqrt(pi)\(**\|integral from 0 to x of exp(\-t\(**t) dt.
> > \}
> > .if t \{\
> > erf\|(x) :=
> > (2/\(sr\(*p)\|\(is\d\s8\z0\s10\u\u\s8x\s10\d\|exp(\-t\u\s82\s10\d)\|dt.
> > \}
> > .Ed
> > .Pp
> > 
> > % mandoc lib/msun/man/erf.3
> > lib/msun/man/erf.3:61:2: scope broken, syntax violated
> > 
> > mandoc will render it just fine, if
> > - the .Bd/.Ed is removed
> > - the conditional is removed (duh)
> > - the conditional is put on one line, like this:
> > 
> > .Bd -ragged -offset indent
> > .if n erf(x) = 2/sqrt(pi)\(**\|integral from 0 to x of exp(\-t\(**t) dt.
> > .if t erf\|(x) := (2/\(sr\(*p)\|\(is\d\s8\z0\s10\u\u\s8x\s10\d\|exp(\-t\u\s82\s10\d)\|dt.
> > .Ed
> > 
> > 
> > Ideas?
> 
> Ulrich,
> 
> Yes: I should fix this.  And it's done.  This flushed out another bug
> such that statements closing a conditional, e.g.,
> 
>   hello \} there
> 
> should be passed verbatim to the front-ends (if allowed by the
> conditional), which would ignore the \}.  This has also been fixed,
> hence the added escape in chars.{c,in} and mandoc.c update.  A
> regression test has been added to this effect.

I saw the commit, thanks for the quick fix!

Uli
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