master
test/chan: add missing flag.Parse in doubleselect.go
test: gofmt chan/*.go
test/chan: document tests
[dev.typeparams] cmd/compile/internal/types2: implement close(ch) where ch is of type parameter type
test/chan: fix trivial typos
all: make copyright headers consistent with one space after period
test: deflake chan/select3.go
test: add a test for gccgo bug in handling break statement in a select
all: fix article typos