[R] alternative to logistic regression

[Terry Therneau]

Brian Ripley wrote
 "Hmm ... I think you are generalizing from another R-like system."
 
  Actually no, I was reading R source code that has no comments, and assumed 
incorrectly that 1. the variable "okLinks" was the list of allowed links and 
that 2. the error message further in the code
  	"... available links are 'logit', 'probit', 'cloglog', 'cauchit', 'log'
was accurate.

  Nevertheless, I should have tested my suggestion more thoroughly before I 
posted it.  The step halving that I now see in glm.fit is a welcome addition, 
but does not completely abrogate the fitting issues that can arise.
  
    Terry T.