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re: Re: st: RE: if, in using issues with ado files: syntax bug?


From   Christopher Baum <kit.baum@bc.edu>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   re: Re: st: RE: if, in using issues with ado files: syntax bug?
Date   Mon, 12 Mar 2012 19:38:25 -0400

<>
Kevin said

It still feels like unexpected and illogical behavior to me. The syntax permits one to combine "if" and "using", or "in" and "using".  Given the current syntax-checker  behavior, I cannot think of *any* circumstances where it in fact makes sense to write a command with both "if" and "using", or both "in" and "using". So why permit it? Same deal with combining a varlist with "using". 

Counterexample:

prog ifusing
	version 12
	syntax varlist using/ [if]
	marksample touse
	di "`using'"
	outsheet `varlist' using `using' if `touse'
end

sysuse auto,clear
ifusing price mpg weight using junk.csv if foreign

Kit

Kit Baum   |   Boston College Economics & DIW Berlin   |   http://ideas.repec.org/e/pba1.html
                             An Introduction to Stata Programming  |   http://www.stata-press.com/books/isp.html
  An Introduction to Modern Econometrics Using Stata  |   http://www.stata-press.com/books/imeus.html


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