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
have argc entries.
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 dif-
ferently than Tcl_Merge, in that the arguments are simply
concatenated: no effort is made to ensure proper list
structure. However, 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 command cleaner-looking.
The result string is dynamically allocated using Tcl_Alloc;
the caller must eventually release the space by calling
Tcl Last change: 7.5 1
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