CentOS 7.0 - man page for tcl_concat (centos section 3)
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Tcl_Concat(3) Tcl Library Procedures Tcl_Concat(3)
Tcl_Concat - concatenate a collection of strings
const char *
int argc (in) Number of strings.
const char *const argv (in) Array of strings to concatenate. Must have argc
Tcl_Concat is a utility procedure used by several of the Tcl commands. Given a collection
of strings, it concatenates them together into a single string, with the original strings
separated by spaces. This procedure behaves differently than Tcl_Merge, in that the argu-
ments are simply concatenated: no effort is made to ensure proper list structure. How-
ever, in most common usage the arguments will all be proper lists themselves; if this is
true, then the result will also have proper list structure.
Tcl_Concat eliminates leading and trailing white space as it copies strings from argv to
the result. If an element of argv consists of nothing but white space, then that string
is ignored entirely. This white-space removal was added to make the output of the concat
The result string is dynamically allocated using Tcl_Alloc; the caller must eventually
release the space by calling Tcl_Free.
Tcl 7.5 Tcl_Concat(3)
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