I've always though it was crazy for Microsoft to hide extensions of known file types by default in Windows. It's just one more layer of obfuscation between the user and their operating system and it seems to be for no other reason than for beauty and neatness.
On Sep 22, 2010, at 4:33 PM, Helen Read wrote:
> On 9/22/2010 3:55 PM, David Houston wrote:
>> There's a bit more to this than extensions (tho I tend to agree - get used
>> to it).
>> In addition to file extensions, there is the Preferred Application Binding
>> process, present in OSX since 10.0 and the pivot turn away from Resource
>> Forks. The usual manner to do this is to select the file, Get Info, and
>> select the preferred application. This has been quite reliable - and it
>> is entirely possible that some users have changed something that upsets
>> what they think is a predefined PAB (OpenOffice, for example, can do this
>> and thereby open .docx without notification to the user!). As shipped,
>> the prebindings supplied with a new installation take care of the vast
>> majority of application/document types.
>> There is also a uniform type identifier, or UTI, which appeared about 5
>> years ago, and that plays a role in this OS decision as well.
>> In 10.6, something that did change was the interoperability of the
>> Type/Creator codes, but I don't think that there are many other
>> applications that would upend the MS TC codes.
>> I'd suspect that the issue here is a mix of both PAB remapping and
>> possibly the stripping of TC code or extension in the mail service.
> My students sometimes have trouble opening up Mathematica file (.nb) attachments in the UVM Webmail. If they click on what seems to be the attachment, they end up with a zip file or the browser might try to display the .nb file as text (which in fact it is). What works is to click on the Save to Disk icon, and then the browser knows it's a .nb (Application/Mathematica).
> I've also seen students have trouble with attachments or files downloaded from the web in Windows, with the default behavior of suppressing file extensions. If the browser doesn't recognize the extension it will change it to .txt when saving the file, which the user has no way of knowing because the extensions are suppressed anyway.
> Helen Read
> Mathematics & Statistics
CAS, IT Administrator
UVM, College of Arts & Sciences
438 College Street #402
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