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author | William Joye <wjoye@cfa.harvard.edu> | 2017-09-22 18:57:19 (GMT) |
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committer | William Joye <wjoye@cfa.harvard.edu> | 2017-09-22 18:57:19 (GMT) |
commit | 2aff4a96fa0286d875bddec0019648e2c6431cbc (patch) | |
tree | f7a9a4800a3f3ad4b77470b8383529176d8b7181 /tcl8.6/doc/concat.n | |
parent | 3fa8e6dc88e8041b6cb88d1b1e9c05676d3346b7 (diff) | |
parent | 29ccecd87709feda60d191f6aaba324ccad91f55 (diff) | |
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Merge commit '29ccecd87709feda60d191f6aaba324ccad91f55' as 'tcl8.6'
Diffstat (limited to 'tcl8.6/doc/concat.n')
-rw-r--r-- | tcl8.6/doc/concat.n | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/tcl8.6/doc/concat.n b/tcl8.6/doc/concat.n new file mode 100644 index 0000000..23c6c91 --- /dev/null +++ b/tcl8.6/doc/concat.n @@ -0,0 +1,59 @@ +'\" +'\" 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: |