Tcl_AllowExceptions(3tcl)

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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_ERROR   or
       TCL_RETURN,  then  Tcl  normally  converts this into a TCL_ERROR return
       with an appropriate message.  The particular script  evaluation  proce-
       dures  of  Tcl  that act in the manner are Tcl_EvalObjEx, Tcl_EvalObjv,
       Tcl_Eval, Tcl_EvalEx,  Tcl_GlobalEval,  Tcl_GlobalEvalObj,  Tcl_VarEval
       and Tcl_VarEvalVA.

       However,  if  Tcl_AllowExceptions is invoked immediately before calling
       one of those a procedures, 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)