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From: John H Meyers on 20 Feb 2010 01:19
On 2/19/2010 11:43 PM, I wrote:

> Microsoft itself provides information about registering applications,
> and perhaps they know a bit about it:
> http://msdn.microsoft.com/en-us/library/dd203067(VS.85).aspx

> That article's info may also hint that two incompatible clients,
> each named "Eudora," might not be able to co-exist,
> as far as registering as potential email clients.

Well, I think that identically named clients _can_ co-exist, after all,
because "the internal name [registry key name, e.g. 'LitMail' in the example]
is a unique string used as the subkey name, but it is never shown to the user"

The name shown to the user is apparently the default _value_ for a subkey,
rather than the name of the subkey.

The "E8" installer and program might not, however, have taken advantage
of this, and might still be overwriting any "Classic" Eudora entries.

It's too bad if it does, because thinking only of oneself and ignoring others
is the all to common shortsightedness behind so many conflicts in this world.

--
From: Ajo Wissink on 20 Feb 2010 10:17
On Fri, 19 Feb 2010 23:43:54 -0600, John H Meyers
<jhmeyers(a)nomail.invalid> wrote:

>On 2/19/2010 5:46 PM, The Learner wrote:
>
>> I went back and changed the Registry again - only this time
>> I substituted progra~1 for Program Files.
>
>Blind registry editing without knowledge is not to be recommended.
>
>Note that the "8.3" path name turned out different in
>http://eudorabb.qualcomm.com/showthread.php?t=14860
>which also suggests the unreliability of such blind guessing.

It was different because Windows 7, in addition to the regular
Program Files directory, also has Program Files (x86) which is the
default installation location for the Eudora application files in that
Operating System.
From: John H Meyers on 20 Feb 2010 11:09
On 2/20/2010 9:17 AM, Ajo Wissink wrote:

JHM:
>> Note that the "8.3" path name turned out different in
>> http://eudorabb.qualcomm.com/showthread.php?t=14860
>> which also suggests the unreliability of such blind guessing.

AW:
> It was different because Windows 7, in addition to the regular
> Program Files directory, also has Program Files (x86) which is the
> default installation location for the Eudora application files in that
> Operating System.

It is always risky to assume anything about "8.3" path names,
because every "name collision" can generate a new one,
so it's safer not to just guess.

A backup procedure here, under Unix, was written under an assumption
that a "snap" (frozen disk image) file number would always be zero;
it often was, but when it wasn't, which eventually happened,
the "backup" was then useless,
unbeknown to the original author of the procedure,
who had over-generalized a "first observation"
to assume the impossibility of any variation.

We don't know exactly how many useless backups were made,
before this was discovered, but we "lucked out,"
because our hardware didn't crash and need a restore.

While still a teen-age driver, I made a very serious mistake one day,
but someone more experienced managed to avoid a head-on collision with me,
and lo, I lucked out too, and am still rolling along unscathed
(so you'd better continue keeping your own eyes on the road,
if you drive in my neighborhood :)

--
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