trusty (3) Tcl_Concat.3tcl.gz

Provided by: tcl8.4-doc_8.4.20-7_all bug

NAME

       Tcl_Concat - concatenate a collection of strings

SYNOPSIS

       #include <tcl.h>

       CONST char *
       Tcl_Concat(argc, argv)

ARGUMENTS

       int          argc               (in)      Number of strings.

       CONST char * CONST              argv[](in)
                                                 Array of strings to concatenate.  Must have argc entries.
_________________________________________________________________

DESCRIPTION

       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 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_Free.                                                                                      │

SEE ALSO                                                                                                         │
       Tcl_ConcatObj                                                                                             │

KEYWORDS                                                                                                         │
       concatenate, strings                                                                                      │