1Tcl_Concat(3) Tcl Library Procedures Tcl_Concat(3)
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8 Tcl_Concat - concatenate a collection of strings
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11 #include <tcl.h>
12 CONST char *
14 Tcl_Concat(argc, argv)
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17 int argc (in) Number of strings.
18 CONST char * CONST argv[](in)
20 Array of strings to concate‐
21 nate. Must have argc
22 entries.
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27 Tcl_Concat is a utility procedure used by several of the Tcl commands.
28 Given a collection of strings, it concatenates them together into a
29 single string, with the original strings separated by spaces. This
30 procedure behaves differently than Tcl_Merge, in that the arguments are
31 simply concatenated: no effort is made to ensure proper list structure.
32 However, in most common usage the arguments will all be proper lists
33 themselves; if this is true, then the result will also have proper
34 list structure.
35 Tcl_Concat eliminates leading and trailing white space as it copies
37 strings from argv to the result. If an element of argv consists of
38 nothing but white space, then that string is ignored entirely. This
39 white-space removal was added to make the output of the concat command
40 cleaner-looking.
41 The result string is dynamically allocated using Tcl_Alloc; the caller │
43 must eventually release the space by calling Tcl_Free. │
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46 Tcl_ConcatObj │
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49 concatenate, strings │
50Tcl 7.5 Tcl_Concat(3)