AllowExc man page on IRIX

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     Tcl_AllowExceptions(3)	 Tcl (7.4)	Tcl_AllowExceptions(3)

     _________________________________________________________________

     NAME
	  Tcl_AllowExceptions - allow all exceptions in next script
	  evaluation

     SYNOPSIS
	  #include <tcl.h>

	  Tcl_AllowExceptions(interp)

     ARGUMENTS
	  Tcl_Interp   *interp	    (in)      Interpreter in which
					      script will be
					      evaluated.
     _________________________________________________________________

     DESCRIPTION
	  If a script is evaluated at top-level (i.e. no other scripts
	  are pending evaluation when the script is invoked), and if
	  the script terminates with a completion code other than
	  TCL_OK, TCL_CONTINUE or TCL_RETURN, then Tcl normally
	  converts this into a TCL_ERROR return with an appropriate
	  message.

	  However, if Tcl_AllowExceptions is invoked immediately
	  before calling a procedure such as Tcl_Eval, then arbitrary
	  completion codes are permitted from the script, and they are
	  returned without modification.  This is useful in cases
	  where the caller can deal with exceptions such as TCL_BREAK
	  or TCL_CONTINUE in a meaningful way.

     KEYWORDS
	  continue, break, exception, interpreter

     Page 1					     (printed 2/19/99)

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