1Tcl_Concat(3)               Tcl Library Procedures               Tcl_Concat(3)
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NAME

8       Tcl_Concat - concatenate a collection of strings
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SYNOPSIS

11       #include <tcl.h>
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13       const char *
14       Tcl_Concat(argc, argv)
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ARGUMENTS

17       int argc (in)                          Number of strings.
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19       const char *const argv[] (in)          Array of strings to concatenate.
20                                              Must have argc entries.
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DESCRIPTION

25       Tcl_Concat is a utility procedure used by several of the Tcl  commands.
26       Given  a  collection  of  strings, it concatenates them together into a
27       single string, with the original strings  separated  by  spaces.   This
28       procedure behaves differently than Tcl_Merge, in that the arguments are
29       simply concatenated: no effort is made to ensure proper list structure.
30       However,  in  most  common usage the arguments will all be proper lists
31       themselves;  if this is true, then the result  will  also  have  proper
32       list structure.
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34       Tcl_Concat  eliminates  leading  and  trailing white space as it copies
35       strings from argv to the result.  If an element  of  argv  consists  of
36       nothing  but  white  space, then that string is ignored entirely.  This
37       white-space removal was added to make the output of the concat  command
38       cleaner-looking.
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40       The result string is dynamically allocated using Tcl_Alloc;  the caller
41       must eventually release the space by calling Tcl_Free.
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SEE ALSO

44       Tcl_ConcatObj
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KEYWORDS

47       concatenate, strings
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51Tcl                                   7.5                        Tcl_Concat(3)