concat(3tcl)

NAME

   concat - Join lists together

SYNOPSIS

   concat ?arg arg ...?
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DESCRIPTION

   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.

EXAMPLES

   Although  concat will concatenate lists, flattening them in the process
   (so giving the following interactive session):

          % concat a b {c d e} {f {g h}}
          a b c d e f {g h}

   it will also concatenate things that are not lists, as can be seen from
   this session:

          % concat " a b {c   " d "  e} f"
          a b {c d e} f

   Note also that the concatenation does not remove spaces from the middle
   of values, as can be seen here:

          % concat "a   b   c" { d e f }
          a   b   c d e f

   (i.e., there are three spaces between each of the a, the b and the c).

SEE ALSO

   append(3tcl), eval(3tcl), join(3tcl)

KEYWORDS

   concatenate, join, lists

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