60 lines
1.6 KiB
Plaintext
60 lines
1.6 KiB
Plaintext
|
'\"
|
||
|
|
'\" 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.
|
||
|
|
'\"
|
||
|
|
.TH concat n 8.3 Tcl "Tcl Built-In Commands"
|
||
|
|
.so man.macros
|
||
|
|
.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 of the
|
||
|
|
arguments are lists, this has the same effect as concatenating them
|
||
|
|
into a single list.
|
||
|
|
Arguments that are empty (after trimming) are ignored entirely.
|
||
|
|
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, flattening them in the process
|
||
|
|
(so giving the following interactive session):
|
||
|
|
.PP
|
||
|
|
.CS
|
||
|
|
\fI%\fR \fBconcat\fR a b {c d e} {f {g h}}
|
||
|
|
\fIa b c d e f {g h}\fR
|
||
|
|
.CE
|
||
|
|
.PP
|
||
|
|
it will also concatenate things that are not lists, as can be seen from this
|
||
|
|
session:
|
||
|
|
.PP
|
||
|
|
.CS
|
||
|
|
\fI%\fR \fBconcat\fR " a b {c " d " e} f"
|
||
|
|
\fIa b {c d e} f\fR
|
||
|
|
.CE
|
||
|
|
.PP
|
||
|
|
Note also that the concatenation does not remove spaces from the middle of
|
||
|
|
values, as can be seen here:
|
||
|
|
.PP
|
||
|
|
.CS
|
||
|
|
\fI%\fR \fBconcat\fR "a b c" { d e f }
|
||
|
|
\fIa b c d e f\fR
|
||
|
|
.CE
|
||
|
|
.PP
|
||
|
|
(i.e., there are three spaces between each of the \fBa\fR, the \fBb\fR and the
|
||
|
|
\fBc\fR).
|
||
|
|
.SH "SEE ALSO"
|
||
|
|
append(n), eval(n), join(n)
|
||
|
|
.SH KEYWORDS
|
||
|
|
concatenate, join, list
|
||
|
|
'\" Local Variables:
|
||
|
|
'\" mode: nroff
|
||
|
|
'\" End:
|