[R] Bug in 0.62.4 -- patch

[Martin Maechler]

>>>>> "Jim" == Jim Lindsey <jlindsey at alpha.luc.ac.be> writes:

    Jim> Please try seq(2,2,by=2) 

Thank you, Jim.
seq(.) did contain much better tests in some cases, but I've overlooked
that one.

Here is the patch to be applied in   
R-0.62.4/src/library/base/R/ :

--- seq.R.~1~	Wed Sep  9 09:35:11 1998
+++ seq.R	Wed Oct 28 15:22:14 1998
@@ -18,7 +18,9 @@
 			from:to
 		else {
 			n <- (del <- to - from)/by
-			if(is.na(n)) {
+			if(del == 0)
+				return(from)
+			else if(is.na(n)) {
 				if(by == 0 && del == 0)
 					return(from)
 				else stop("invalid (to - from)/by in seq(.)")
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
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