[plt-scheme] errotrace in 4.0?

On Sep 14, Jon Rafkind wrote:
> Oh *rolls eyes*. Regardless of whether I wanted the profiler I need
> to do something like
> 
> mzscheme -l errortrace -f somefile.ss
> 
> And if I want the profiler then I should really do
> 
> mzscheme -f top-level.ss
> 
> where top-level.ss doesn't have #lang scheme and does the work of
> require'ing errortrace and turning profiling information on.
> 
> That would be nice to put in the quick start guide. Anyway, thanks
> for setting me straight.

A non-quick-start option:

* Get http://barzilay.org/interactive.ss, and load it from your
  ~/.mzschemerc,

  winooski:/tmp eli> mz
  Welcome to MzScheme v4.1.0.3 [3m], Copyright (c) 2004-2008 PLT Scheme Inc.
  -> ,prof +
  -> ,r x.ss
  20100
  -> ,prof *
  Sorting profile data...
  =========================================================
  time = 0 : no. = 201 : foo in #<syntax:/tmp/x.ss:7:0>
  =========================================================
  time = 0 : no. = 1 : #f in #<syntax:/tmp/x.ss:12:0>
  Total samples: 0
  -> ,h prof
    profile (prof): profiler control
    > ,prof [<flag> ...]
  [...blah blah blah...]

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                  http://www.barzilay.org/                 Maze is Life!