[PATCH] Clear clipboard selection from clippy history

[Allan Odgaard]

On 31 May 2020, at 3:50, Oliver Ford wrote:

> rather than every user figuring out the correct command independently

It does indeed seem wrong that `pass` should support every clipboard 
manager out there.

On macOS the convention is to mark the clipboard item with 
`org.nspasteboard.ConcealedType` so that clipboard managers know that 
they should not add the item to the history, details at 
http://nspasteboard.org/ - Although `pass` doesn’t actually follow 
this convention on macOS, as the shell command to store items on the 
clipboard does not allow adding auxiliary types.

Furthermore, some clipboard managers have heuristics to identify 
password items.

I am not familiar with Linux clipboard and its clipboard managers, but 
is there any way to tag the data?

Alternatively, is there any way to setup a regular expression to 
identify passwords?

I see from your commit that the `clipdel` command already support 
deleting by regular expression, so it seems like worst-case one could 
setup a cronjob to regularly prune passwords from its history.