diff.txtar

# gofumpt fails with -d if there is a diff.

exec gofumpt -d good.go
! stdout .
! stderr .

! exec gofumpt -d bad.go
cmp stdout bad.go.diff
! stderr .

-- good.go --
package p

func f() {
	println("well formatted")
}
-- bad.go --
package p

func f() {
println("not well formatted")
}
-- bad.go.diff --
diff bad.go.orig bad.go
--- bad.go.orig
+++ bad.go
@@ -1,5 +1,5 @@
 package p
 
 func f() {
-println("not well formatted")
+	println("not well formatted")
 }