Playground example: https://go.dev/play/p/9cuRyaNveO8

Change-Id: I2fbc3fec0f3755eb3d11b47edfb2201d66fc622d
Reviewed-on: https://go-review.googlesource.com/c/text/+/614395
LUCI-TryBot-Result: Go LUCI <[email protected]>
Auto-Submit: Ian Lance Taylor <[email protected]>
Reviewed-by: Marcel van Lohuizen <[email protected]>
Reviewed-by: Ian Lance Taylor <[email protected]>
Reviewed-by: Carlos Amedee <[email protected]>