[MS] every now and then I trip on some things in the core that I'd like to change and can't. This page is meant to keep a list, additions welcome.

The first batch concerns command invocation:

   * get rid of '''TCL_ALLOW_EXCEPTIONS''': the library shouldn't care about that and always return the actual code; '''tclsh''''s main can do whatever it needs, of course. This functionality seems to have fallen on the wrong side of the border.
   * of course .... '''iPtr->result''' should die!
   * stop promising that a command receives an '''empty unshared result''' in the interpreter: a command has to set its result from scratch, reset it or leave it untouched. This has performance implications, but also enables simpler shell-style pipelining (without nesting [[...]]). Maybe reserve a variable or have a command to get the interp's result.
   * '''Tcl_[[GS]]etCommandInfo''' and direct calling of commands!! At least rethink thoroughly 

   * hide more implementation details behind '''opaque pointers''': interp, CallFrame (don't let anybody else alloc them, they do not need to know the size nor how the core allocates or frees them), ...

(TBC)

----
[[
[Category Internals]
]]