Add button to select all text in a preformatted block

Came here looking to see if this was possible. Would be super useful. Wanted to paste a webcal link, which is a long single line. The scrollbar is nice for formatting but it also made copying more difficult so instead I opted for quoting it.

webcal://p07-calendars.icloud.com/published/2/rXPvXJTMckFZitCwW_K-DLBq3SXfawefHgg1L78iPNnafwefK9e25qpya0Sx5XIjiwawfeawefjuzp0RhUhFvMNpa5xrxVvW0Qd-PkqukkFu0XactUi6C2QaNaqD3o

webcal://p07-calendars.icloud.com/published/2/rXPvXJTMckFZitCwW_K-DLBq3SXfawefHgg1L78iPNnafwefK9e25qpya0Sx5XIjiwawfeawefjuzp0RhUhFvMNpa5xrxVvW0Qd-PkqukkFu0XactUi6C2QaNaqD3o

Would also be nice if triple-clicking preformatted text or quoted text would only highlight what’s inside.