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| -rw-r--r-- | doc/concat.n | 32 |
1 files changed, 17 insertions, 15 deletions
diff --git a/doc/concat.n b/doc/concat.n index 52f4094..dded6a2 100644 --- a/doc/concat.n +++ b/doc/concat.n @@ -5,7 +5,7 @@ '\" 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 1.4 2002/07/01 10:50:21 dkf Exp $ +'\" RCS: @(#) $Id: concat.n,v 1.5 2004/05/22 00:19:37 dkf Exp $ '\" .so man.macros .TH concat n 8.3 Tcl "Tcl Built-In Commands" @@ -20,28 +20,30 @@ concat \- Join lists together .SH DESCRIPTION .PP This command joins each of its arguments together with spaces after -trimming leading and trailing spaces from each of them. If all the +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. For example, the command +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 a b {c d e} {f {g h}}\fR +concat a b {c d e} {f {g h}} .CE -will return +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 -\fBa b c d e f {g h}\fR +concat " a b {c " d " e} f" .CE -as its result, and -.CS -\fBconcat " a b {c " d " e} f"\fR -.CE -will return +will return "\fBa b {c d e} f\fR" as its result. + +Note that the concatenation does not remove spaces from the middle of +its arguments, so the command: .CS -\fBa b {c d e} f\fR +concat "a b c" { d e f } .CE -as its result. -.PP -If no \fIarg\fRs are supplied, the result is an empty string. +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) |