AllowExc

Tcl_AllowExceptions(3)      Tcl Library Procedures      Tcl_AllowExceptions(3)



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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.
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DESCRIPTION
       If a script is evaluated at top-level (i.e. no other scripts are  pend-
       ing  evaluation  when  the script is invoked), and if the script termi-
       nates 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 permit-
       ted 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



Tcl                                   7.4               Tcl_AllowExceptions(3)