src/cmd/go/testdata/script/fileline.txt - go.git - Git at Google

 # look for short, relative file:line in error message
 ! go run ../../gopath/x/y/z/err.go
 stderr ^..[\\/]x[\\/]y[\\/]z[\\/]err.go:

 -- ../x/y/z/err.go --
 package main; import "bar"
	# look for short, relative file:line in error message
	! go run ../../gopath/x/y/z/err.go
	stderr ^..[\\/]x[\\/]y[\\/]z[\\/]err.go:

	-- ../x/y/z/err.go --
	package main; import "bar"