nocond.1

.TH NOCOND 1 "local 8/1/94"
.SH NAME
nocond \- provide noweb with conditional tangling
.SH SYNOPSIS
.B nocond
version
.br
\fBawk -f nocond.awk\fP version
.SH DESCRIPTION
.I nocond
is a filter designed to work with
.I notangle(1)
to provide it with a simple
conditional capability.  Chunk definitions may be
marked as conditional by including a version name
wrapped in double parentheses as part of the chunk name.
.PP
.I nocond
concatenates its command line arguments
(with a single space between each argument) to form
a version name, and removes matching conditional marks
from chunk definition names so
.I notangle(1)
will include the chunks as part of the appropriate
definition.
.PP
.I nocond
also provides a file of TeX macros, \fInocondmac.tex\fP, which
will nicely typeset conditional chunk names.
.SH EXAMPLE
Suppose that a Pascal web (\fIpgm.nw\fP) uses the chunk
.IP
\fB<<\fPOpen the output file\fB>>\fP
.PP
The author can provide multiple definitions of this chunk:
.IP
\fB<<\fPOpen the output file ((UCSD Pascal))\fB>>=\fP
.nf
REWRITE(outfile, 'XYZ.DAT');
\fB<<\fPOpen the output file ((Turbo Pascal))\fB>>=\fP
ASSIGN(outfile, 'XYZ.DAT');
REWRITE(outfile);
.fi
.PP
To tangle the UCSD Pascal version, the command line
.IP
notangle -filter "nocond UCSD Pascal" pgm.nw > pgm.pas
.PP
will suffice.  The Turbo Pascal version can be tangled
similarly.
.SH SEE ALSO
.I notangle(1)
.SH AUTHOR
Lee Wittenberg.  Internet address: \fBleew@pilot.njin.net\fP