'''[http://www.tcl.tk/man/tcl8.6/TclCmd/coroutine.htm%|%yieldm]''' was located in `[tcl::unsupported%|%::tcl::unsupported%|%]` in beta releases of [Changes in Tcl/Tk 8.6]. Later, [yieldto] was modified such that it became trivial to implement `yieldm` in terms of it. Thereafter, `::tcl::unsupported::yieldm` was removed. ** Synopsis ** : '''::[tcl::unsupported]::yieldm''' ?''value''? ** Description ** '''yieldm''' is like [yield], except that the next time the the associated coroutine context command is executed, it behaves like a [proc%|%procedure] whose argument specification is the single special value, `args`. I.e. the coroutine context accepts an arbitrary number of arguments, and the return value of [yieldm] is a [list] of those arguments. `yieldm` is no-longer a built-in command, but can be implemented like this: ====== proc yieldm value { yieldto return -level 0 $value } ====== In this implementation, any command that simply returns `$value` could be used instead of `[return]`: ====== proc yieldm value { yieldto lindex $value } ====== ** Discussion ** [AMG]: Is any progress being made towards officially adopting this command or a variation thereof? [MS] did not see any: no TIP, no requests <> Command