odd PH/VMS logical name behaviour

[Chris Sharman]

Lorry Litman wrote:

> 
> I have found the same result testing on PH7.10.G1 under both VMS7.2-2 
> and VMS7.3-1.
> It appears that we are also using the VMS default of case_blind and from 
> the result of the test I gather PH is not.
> As pointed out, it does make a difference if you use double quotes when 
> defining the logical name. i.e. $define "test" quoteval is different 
> from $define test noquoteval
> However, I assume because case_blind is on if you do $show logical t* 
> you will only see the last test logical name that you defined. If you 
> change the case i.e $def "Test" quoteval, and $def test noquoteval, and 
> do $show logical t* you will see both.
> So it does appear that VMS does distinguish between the two on the 
> define side but not on the translate side.

Think sh log does distinguish:
sho log "t*" ! finds neither
sho log t* ! finds both
sho log "T*" ! finds both
sho log te* ! finds the unquoted
sho log "Te*" ! finds the quoted.

* naturally matches upper and lowercase.
Can't find a switch to specify case blind, but there may not be one - 
there's no documented api to do wildcard searches: sho log uses an 
undocumented service call. You can certainly specify case 
blind/sensitive to sys$trnlnm and f$trnlnm.

> To deassign the above you would have to $deas "test" and $deas test.
> I've never used a double quote around a logical name so I can't say if 
> this behaved this way under previous versions of PH & VMS.

It's always been in VMS, I believe; but DCL's uppercasing of everything 
by default has obscured it.

Chris


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