Tcl_AllowExceptions (3)
allow all exceptions in next script evaluation
SYNOPSIS
#include <tcl.h>
Tcl_AllowExceptions(interp)
ARGUMENTS
Tcl_Interp *doublePtr
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
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