Tcl_AllowExceptions — allow all exceptions in next script evaluation
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_Interp *interp (in)
Interpreter in which script will be evaluated.
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
This is useful in cases where the caller can deal with exceptions
such as TCL_BREAK or TCL_CONTINUE in a meaningful way.
continue, break, exception, interpreter
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