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Date: Tue, 1 Jun 2010 12:10:33 +0200
From: Ulrich =?utf-8?B?U3DDtnJsZWlu?= <uqs@spoerlein.net>
To: tech@mdocml.bsd.lv
Subject: roff conditionals inside .Bd
Message-ID: <20100601101033.GE91631@acme.spoerlein.net>
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User-Agent: Mutt/1.5.20 (2009-06-14)

Hi guys,

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?
Uli
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