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st: RE: St: a bug in stphplot?


From   "Steichen, Thomas J." <SteichT@rjrt.com>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: St: a bug in stphplot?
Date   Thu, 17 Nov 2005 15:20:36 -0500

Plummer, Dale writes (in part):
> We have found what looks like a bug in stphplot.  
> If value labels are defined
> that contain an equal sign then the label is truncated 
> at the equal sign when the
> label is used in the legend produced by stphplot.
> Have I overlooked something?

No, it looks like a bug to me.  It occurs when the code
tries to tokenize the category label, parsing on "==".

Apparently Stata treats the == as a parse character 
(note singular) being accidentally entered twice, therefore
setting parse() equal to "=".  Just as Stata would ignore
multiple spaces in a row, or a comma-space combination, it
freely parses =, ==, or ===, etc. as a single token split.

We see in the code: 
- tokenize "`vlbl`i''", parse("==")
= tokenize "bearings==abnormal=no", parse("==")
- cap confirm number `3'
= cap confirm number abnormal 

The third token is "abnormal" rather than "abnormal=no".

Tom

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