[R] Muliple partial matches with pmatch

[Peter Dalgaard BSA]

Peter Dalgaard BSA <p.dalgaard at biostat.ku.dk> writes:

> John Maindonald <john.maindonald at anu.edu.au> writes:
> 
> > > pmatch("me",c("median","mean","mode"))
> > [1] NA
> > 
> > > pmatch("me",c("median","mean","mede"))
> > [1] 3
> > 
> > > pmatch("me",c("median","mean","mode"),duplicates.ok=T)
> > [1] 1
> > 
> > Is this a bug?
> 
> Of course it is... and one that seems strangely familiar. Did we fix
> this before, or did we forget to check this variation?

I think it was another thing we had earlier. This one is due to logic
of the following type

match=0
for each target
	if (input matches target)
		if (match)
			match=0
		else 
			match=target number

I.e. flip-flop... So if there's an odd number of matches, it returns
the last one; if there's an even number it declares no-match. Will
fix. 

-- 
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk)             FAX: (+45) 35327907
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