const google.golang.org/grpc/internal/transport.percentByte

5 uses

	google.golang.org/grpc/internal/transport (current package)
		http_util.go#L214: 	percentByte = '%'
		http_util.go#L231: 		if !(c >= spaceByte && c <= tildeByte && c != percentByte) {
		http_util.go#L253: 			if b >= spaceByte && b <= tildeByte && b != percentByte {
		http_util.go#L271: 		if msg[i] == percentByte && i+2 < lenMsg {
		http_util.go#L283: 		if c == percentByte && i+2 < lenMsg {