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.\"
.\" cook - file construction tool
.\" Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1997 Peter Miller;
.\" All rights reserved.
.\"
.\" This program is free software; you can redistribute it and/or modify
.\" it under the terms of the GNU General Public License as published by
.\" the Free Software Foundation; either version 2 of the License, or
.\" (at your option) any later version.
.\"
.\" This program is distributed in the hope that it will be useful,
.\" but WITHOUT ANY WARRANTY; without even the implied warranty of
.\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
.\" GNU General Public License for more details.
.\"
.\" You should have received a copy of the GNU General Public License
.\" along with this program; if not, write to the Free Software
.\" Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
.\"
.\" MANIFEST: User Guide, Built-In Functions, Stringset
.\"
.H 2 "stringset"
Logical operations are performed on sets of strings.
These include conjunction (implicit),
disjunction
.RB ( * )
and difference
.RB ( - ).
.H 3 "Example"
.TS
center,tab(;);
l l.
Expression;Result
_
[stringset a b a];a b
[stringset a b c * a];a
[stringset a b c - a];b c
.TE
.P
The can be very useful in constructing lists of source files:
.eB
src = [stringset [glob "*.[cyl]" ] - y.tab.c lex.yy.c];
.eE
.H 3 "See Also"
filter,
filter_out,
glob,
in,
patsubst,
subst
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