macOS : File extensions

How do I get macOS to recognize file extensions such as .kicad_sym?

Recognize them how?
You can tell Finder to open associate specific file extensions with an App by choosing “Open With…” in Get-Info.

When renaming, some extensions in the filename are never recognized.

• Functional extension:
Screenshot 2023-03-06 at 1.18.49 PM

• Disfunctional extension:
Screenshot 2023-03-06 at 1.17.56 PM

This remains true even if the file is associated with an app, such as KiCad, via [Always Open With] (as you suggested).

I don’t think KiCad supports opening those files from Finder, although I could be wrong.
Might check and see if any other platform supports opening them from a file explorer, as opposed to from within the app.

I can associate .kicad_sym with and it will open, but that still does not exclude the extension from being highlighted when renaming files. (This is what I care about — that recognizes the extensions as an extension. I should have been more specific.)

Edited above response.

KiCad needs to define that file extension.

Do "Get-info” Open with (select KiCad) then, crucially, “change all.”
That works.

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That does work. Awesome; I didn’t try the Change All previously.

Re: Associating file extensions, is that a bug report I should fill out?

It’s probably worth bringing to the developer’s attention.

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Submitted. Thank you for working with me.