It works fine with ActiveState 5.6.0, 5.6.1, 5.8.0, 5.8.8 and 5.10.0.

C:\>md Foo

C:\>echo "package Bar; 1" > Foo\Bar.pm

C:\>perl -e"use Bar"
Can't locate Bar.pm in @INC (@INC contains: c:/Progs/perl588/lib c:/Pr
+ogs/perl588/site/lib .) at -e line 1.
BEGIN failed--compilation aborted at -e line 1.

C:\>set PERL5LIB=C:\Foo

C:\>perl -e"use Bar"

C:\>set PERL5LIB=\\tribble05\C$\Foo

C:\>perl -e"use Bar"
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