Contexts are a PMC type now, and eventually will be visible and usable from PIR. This page will act like a wishlist for the kinds of things that we want to be able to do with Context PMCs:
Retrieve a backtrace at any point, not just from an exceptiondone in r41554- Immediately unwind up the call chain by N frames.
- Related - have a simple (settle for documented) way to run an invokable PMC up the call chain, e.g. tcl's return -level ... ( http://www.tcl.tk/man/tcl8.5/TclCmd/return.htm#M15) or uplevel {set x 42} ( http://www.tcl.tk/man/tcl8.5/TclCmd/uplevel.htm) --coke
