concat - Join lists together


concat ?arg arg ...?


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 args are supplied, the result is an empty string.


Although concat will concatenate lists (so the command:
concat a b {c d e} {f {g h}}
will return "a b c d e f {g h}" as its result), it will also concatenate things that are not lists, and hence the command:
concat " a b {c   " d "  e} f"
will return "a b {c d e} f" as its result.

Note that the concatenation does not remove spaces from the middle of its arguments, so the command:

concat "a   b   c" { d e f }
will return "a b c d e f" (i.e. with three spaces between the a, the b and the c).


append, eval


concatenate, join, lists
Copyright © 1993 The Regents of the University of California.
Copyright © 1994-1996 Sun Microsystems, Inc.
Copyright © 1995-1997 Roger E. Critchlow Jr.