identifying macOS folders that are considered to be files?

Mark Waddingham mark at
Fri May 24 21:53:18 EDT 2019

I’m pretty sure bundles always have a PkgInfo file in them too - so you should (alternatively to using LCB) use ‘there is a file ...’.

Warmest Regards,


Sent from my iPhone

> On 24 May 2019, at 18:06, Trevor DeVore via use-livecode <use-livecode at> wrote:
> On Fri, May 24, 2019 at 7:35 PM kee nethery via use-livecode <
> use-livecode at> wrote:
>> Is there any way for LiveCode to tell me that a macOS folder that gets
>> listed with “the folders” is actually treated as a file? For example, .app
>> is a file where View Package Contents is an option but the OS treats it as
>> a single thing. Same with .numbers, .pages, and various other “files”. They
>> can be opened up and the contents can be viewed.
>> Is there any way to know which “folders” are actually treated by the OS as
>> files?
> If you don't get any pure LCS solutions you could use an extension. macOS
> has an API for this:
> I just tested it in my macOS test bed for extensions and it seems to work.
> It is the NSWorkspaceIsFilePackageAtPath() handler in this file:
> -- 
> Trevor DeVore
> ScreenSteps
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