Format "%5f" vs. "%5g"

[Theo H. <th...@ph...>]

Hi all. Why does `set format y "%5f"` not work like `set format y 
"%5g"`? I'm dealing with numbers between 0 and 5, so I would expect both 
to produce tic labels with right justified floating point numbers in a 
field of five characters, with no trailing zeros. %5g does, but %5f 
doesn't: it produces tic labels with six decimal places and trailing zeros.

I've tried 4.2.3 and the latest CVS on Cygwin, and 4.3.0 (dated February 
2008) on Linux.

Minimal example:

reset
plot x
set format y "%5g"
replot
set format y "%5f"
replot

According to my interpretation of the documentation, the last two plots 
should be identical.

THeo