Windows/DOS PATH statement again

[Phil Holmes]

I normally install each new version of Lilypond as it's released.  I never 
uninstall the old version, since I use it for testing.  As a result, my PATH 
statement gets an increasing number of entries similar to: C:\Program Files 
(x86)\LilyPondV2.14.0\usr\bin;C:\Program Files 
(x86)\LilyPondV2.15.2\usr\bin.

This has two effects: running Lilypond from the command line (which I never 
actually do) runs the oldest version, since it's first on the PATH 
statement; and eventually the PATH entry becomes too long and most of it is 
lost, stopping me running many DOS commands.

Question is: is this a bug in the install process?  It doesn't particularly 
worry me now, because I know about it and prune my PATH statement every now 
and then.  I presume (though I've not checked) that uninstalling lily also 
nukes the extra PATH entry.  But it seems to me that a new install _should_ 
over-write the PATH statement of a previous install.  Anyone else think so?

--
Phil Holmes
Bug Squad