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OpenDarwin 7.2.1 - man page for tcl_wrongnumargs (opendarwin section 3)

Tcl_WrongNumArgs(3)		      Tcl Library Procedures		      Tcl_WrongNumArgs(3)


       Tcl_WrongNumArgs - generate standard error message for wrong number of arguments

       #include <tcl.h>

       Tcl_WrongNumArgs(interp, objc, objv, message)

       Tcl_Interp   interp	    (in)      Interpreter  in which error will be reported: error
					      message gets stored in its result object.

       int	    objc	    (in)      Number of leading arguments from objv to include in
					      error message.

       Tcl_Obj	    *CONST objv[]   (in)      Arguments  to  command that had the wrong number of

       CONST char   *message	    (in)      Additional error information to print after leading
					      arguments  from  objv.   This  typically	gives the
					      acceptable syntax of the	command.   This  argument
					      may be NULL.

       Tcl_WrongNumArgs  is  a	utility procedure that is invoked by command procedures when they
       discover that they have received the wrong number of arguments.	 Tcl_WrongNumArgs  gener-
       ates  a	standard error message and stores it in the result object of interp.  The message
       includes the objc initial elements of objv plus message.  For example, if objv consists of
       the  values foo and bar, objc is 1, and message is ``fileName count'' then interp's result
       object will be set to the following string:
	      wrong # args: should be "foo fileName count"
       If objc is 2, the result will be set to the following string:
	      wrong # args: should be "foo bar fileName count"
       Objc is usually 1, but may be 2 or more for commands like string and the  Tk  widget  com-
       mands, which use the first argument as a subcommand.

       Some  of the objects in the objv array may be abbreviations for a subcommand.  The command
       Tcl_GetIndexFromObj will convert the abbreviated string object into an indexObject.  If an
       error  occurs  in  the  parsing of the subcommand we would like to use the full subcommand
       name rather than the abbreviation.  If the Tcl_WrongNumArgs command finds any indexObjects
       in the objv array it will use the full subcommand name in the error message instead of the
       abbreviated name that was originally passed in.	Using the above example, lets assume that
       bar is actually an abbreviation for barfly and the object is now an indexObject because it
       was passed to Tcl_GetIndexFromObj.  In this case the error message would be:
	      wrong # args: should be "foo barfly fileName count"


       command, error message, wrong number of arguments

Tcl					       8.0			      Tcl_WrongNumArgs(3)

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