Attempt to open deleted sketch from Sketchbook or Examples menus fails silently

[kittaakos]

Originally posted by @tigoe here:

Also worth notuing that the Examples menu fails to scan the libraries for examples, as the IDE 1.8.x does. See @ubidefeo 's screenshots to see it.

Context from here:

Screenshots

[kittaakos]

@tigoe, can you please tell me what do you mean by Examples menu fails to scan the libraries for examples? Are you missing a few menu items? Which one of them specifically? Thank you!

[per1234]

Closing due to lack of response.

@tigoe if you'll provide the requested information I'll be happy to re-open this issue.

[tigoe]

Sorry for the long delay. Here's how to duplicate what I was seeing:

1. From your ~/Documents/Arduino/library folder, choose a library that has examples
2. Check the File -> Examples menu to open an example from that library
3. Without quitting IDE 2.0, go to the finder
4. remove the library from the ~/Documents/Arduino/library folder
5. Go back to the IDE 2.0
6. Check the File -> Examples menu. The library will still be there, and you can choose an example, but it will not open and will produce no error.

I have tested this with multiple libraries, both those that are imported through the library manager, and those added manually through the Finder. The only solution is to restart the IDE. This was not the behavior of the File -> examples menu in IDE 1.0. It would produce an error that said "The selected Sketch no longer exists. You may need to restart Arduino to update the sketchbook menu"

[kittaakos]

It was fixed for the File > Sketchbook via #1152.

We have to verify it for the libraries.

[per1234]

I just checked the behavior when attempting to open a deleted library example via the File > Examples menu and unfortunately it still fails silently. So we can not consider this fixed by #1152