'\" '\" Copyright (c) 1993 The Regents of the University of California. '\" Copyright (c) 1994-1996 Sun Microsystems, Inc. '\" '\" See the file "license.terms" for information on usage and redistribution '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES. '\" '\" RCS: @(#) $Id: concat.n,v 1.1.1.1 2007/07/10 15:04:23 duncan Exp $ '\" .so man.macros .TH concat n 8.3 Tcl "Tcl Built-In Commands" .BS '\" Note: do not modify the .SH NAME line immediately below! .SH NAME concat \- Join lists together .SH SYNOPSIS \fBconcat\fI \fR?\fIarg arg ...\fR? .BE .SH DESCRIPTION .PP This command joins each of its arguments together with spaces after trimming leading and trailing white-space from each of them. If all the arguments are lists, this has the same effect as concatenating them into a single list. It permits any number of arguments; if no \fIarg\fRs are supplied, the result is an empty string. .SH EXAMPLES Although \fBconcat\fR will concatenate lists (so the command: .CS \fBconcat\fR a b {c d e} {f {g h}} .CE will return "\fBa b c d e f {g h}\fR" as its result), it will also concatenate things that are not lists, and hence the command: .CS \fBconcat\fR " a b {c " d " e} f" .CE will return "\fBa b {c d e} f\fR" as its result. .PP Note that the concatenation does not remove spaces from the middle of its arguments, so the command: .CS \fBconcat\fR "a b c" { d e f } .CE will return "\fBa b c d e f\fR" (i.e. with three spaces between the \fBa\fR, the \fBb\fR and the \fBc\fR). .SH "SEE ALSO" append(n), eval(n) .SH KEYWORDS concatenate, join, lists