Last of 3 articles explains how macOS selects and starts the app with which to open a document which you double-clicked/tapped.
Finder
Second of 3 articles explains how macOS puts documents through its security checks before opening them.
How does macOS open the document that you double-click/tap? First of 3 parts explaining what should happen and where it can go wrong.
Additional information is now shown for UTIs, it has its own custom app icon, and works wonderfully in Dark Mode.
For around 5 years, if not longer, the Finder has suffered from an obvious bug which disrupts the workflow. Will Mojave fix it?
Illustrated workthrough with Desktop & Documents Folders option turned on, showing file layouts in the GUI and file system. And a new version of Cirrus to do it with.
A detailed look at the presentation of folders and files in the Finder, GUI, Terminal, and FileManager in different iCloud options.
Consistency is an overriding design principle for the human interface. However you use iCloud storage, it adopts different behaviours from those of the Finder. Apple needs to evolve the iCloud interface to improve it, and to empower the user.
Telling what a file is – whether plain text, Unicode UTF-8, 32-bit code, and so on – can be hard. Just use a little magic, free in the command tool ‘file’. Includes Swift code to access magic numbers.
Simple tools to preserve versions in documents, whether copied to an external drive, NAS, cloud storage including iCloud and Dropbox, even sent by email.
