st: -choke-

[E Michael Foster <emfoster@uab.edu>]

Whenever I change jobs (and that's not infrequently), my students encounter a programming command that surprises them.  It's my -choke- command. 
I stick it in code to run part of a do file and stop execution at a point in the code.  It returns an error and the student(s) think they've done something wrong.
I understand that I could submit part of a do-file by selecting it within the Stata do-file editor.  But I don't use it.  I use ultraedit.

So I think it's time to define chock.ado.

program define choke
     di "Mike says to stop!!!!"
     qui stoprightnow
     end
                
This doesn't quite work because I don't want anything other than "Mike says to stop!!!" in the log.  

I'd like to suppress the error message: 
       unrecognized command:  stoprightnow
       r(199);
yet, if I use -cap- execution proceeds.

Suggestions?



E. Michael Foster
Professor,            Department of Health Care Organization and Policy 
                                Department of Biostatistics
School of Public Health 
The University of Alabama at Birmingham 
  
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