Quick Select mode allows you to quickly highlight text that matches commonly copied patterns, select a match by typing a one-or-two character prefix and copy it to the clipboard.
QuickSelect key assignment is used to enter quick select mode; it is
CTRL-SHIFT-SPACE by default.
When quick select mode is activated, the terminal is searched for items that match the patterns defined by the quick_select_patterns configuration combined with a default set of patterns that match things such as URL and path fragments, git hashes, ip addresses and numbers.
The bottom of the screen shows your input text along with a hint as to what to do next; typing in a highlighted prefix will cause that text to be selected and copied to the clipboard, and quick select mode will be cancelled.
Typing in the uppercase form of the prefix will copy AND paste the highlighted text, and cancel quick select mod.
ESCAPE will cancel quick select mode.