protojson issue

The protojson go package appears to exhibit different behaviour when converting from protobuf messages to

All tests run main.go as is, then edit main.go to uncomment the second print statement:

Linux Output

With go version go1.16.6 linux/amd64

	$ go run main.go
	{"aString":"somestring", "someBytes":"c29tZWJ5dGVz", "aNumber":"23"}
	$ go run main.go
	{"aString":"somestring","someBytes":"c29tZWJ5dGVz","aNumber":"23"}
	{"aString":"somestring","someBytes":"c29tZWJ5dGVz","aNumber":"23"}

First run has spaces after commas, second run does not.

With go version go1.16.7 linux/amd64

	$ go run main.go
	{"aString":"somestring", "someBytes":"c29tZWJ5dGVz", "aNumber":"23"}
	$ go run main.go
	{"aString":"somestring", "someBytes":"c29tZWJ5dGVz", "aNumber":"23"}
	{"aString":"somestring", "someBytes":"c29tZWJ5dGVz", "aNumber":"23"}

Both runs have spaces with newer go version

Windows Output

Same process as above gives this output: There are never any spaces after commas

With go version go1.16.2 windows/amd64

Never any spaces:

	PS E:\protojsonissue\cmd\jsonexample> go run main.go
	{"aString":"somestring","someBytes":"c29tZWJ5dGVz","aNumber":"23"}
	PS E:\protojsonissue\cmd\jsonexample> go run main.go
	{"aString":"somestring","someBytes":"c29tZWJ5dGVz","aNumber":"23"}
	{"aString":"somestring","someBytes":"c29tZWJ5dGVz","aNumber":"23"}

With go version go1.16.7 windows/amd64

Always spaces

	PS E:\protojsonissue\cmd\jsonexample> go run main.go
	{"aString":"somestring", "someBytes":"c29tZWJ5dGVz", "aNumber":"23"}
	PS E:\protojsonissue\cmd\jsonexample> go run main.go
	{"aString":"somestring", "someBytes":"c29tZWJ5dGVz", "aNumber":"23"}
	{"aString":"somestring", "someBytes":"c29tZWJ5dGVz", "aNumber":"23"}