[S] decimal points in Splus v5

[Peter Perkins <peter@caliban.ucsd.edu>]

can anyone point me to documentation about how/why the new release of S
deals with decimal points in numbers that don't "need them"? that is, in
S-Plus v5.1, the expression 

   function() c(1, 1., 1.0, 1.1)

returns

   function()
   c(1, 1., 1., 1.1)

where v3.4 used to return

   function()
   c(1, 1, 1, 1.1)

should i care? i first noticed this while using convertOldLibrary(), but
i don't see mention of it anywhere in the green book or the manuals.

thanks.

- peter
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