Function extractNestedArg

cli/plugins/args_extract.go:176–198

extractNestedArg pulls a string from inside the `args` field of the @coder envelope (or any other plugin that uses the same nested shape). Useful when a key collides with a top-level field — e.g. @coder's `{"cmd":"exec","args":{"cmd":"go test"}}` has "cmd" in both layers. extractStringArg returns th

(args []string, keys ...string)

// extractStringArg returns the OUTER cmd (which is the subcommand name);
// this helper returns the INNER one (the actual user command).
func extractNestedArg(args []string, keys ...string) string {
	if len(args) == 0 {
		return ""
	}
	raw := strings.TrimSpace(args[0])
	if raw == "" || raw[0] != '{' {
		// No JSON envelope to dig into — fall back to flag-style scan.
		return stringFromFlagArgs(args, keys)
	}
	var top map[string]json.RawMessage
	if err := json.Unmarshal([]byte(raw), &top); err != nil {
		return stringFromFlagArgs(args, keys)
	}
	if inner, ok := top["args"]; ok {
		var innerMap map[string]json.RawMessage
		if err := json.Unmarshal(inner, &innerMap); err == nil {
			if v := stringFromMap(innerMap, keys); v != "" {
				return v
			}
		}
	}
	return stringFromFlagArgs(args, keys)
}