* nsf.c (NsfOUplevelMethod, NsfOUpvarMethod, NsfCallstackFindCallingContext): Reform of uplevel and upvar methods, based on the recent feedback by Zoran. First, uplevel and upvar methods, as well as [current callinglevel] now behave consistently (re frame skipping for mixin and filter transparency). If there is no innermost enclosing proc frame, the innermost non-proc (e.g., namespace) frame is selected (rather than a "#0" as default). Second, argument handling for both uplevel (i.e., level sniffing in multi-arg case) and upvar (e.g., made silent TCL_ERROR for invalid argument arities explicit) have been fixed. * Object.man, methods.test: Added documentation for both methods (Object.man) and tests.
added an additional variant of ALLOC_ON_STACK The new version does not use alloca(), it does not use VLA and it does not boat the stack in case huge vectors are to be processed. It uses a plain array up to a certain size and switches to malloc() above this size.