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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
       pending evaluation when the script is invoked), and if the script
       terminates 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
       procedures 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
       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

Tcl                                   7.4               Tcl_AllowExceptions(3)