feat: updates

src/cmd_parseecdsasignature.rs

@@ -3,7 +3,7 @@ use std::collections::BTreeMap;
 use clap::{App, Arg, ArgMatches, SubCommand};
 
 use rust_util::util_clap::{Command, CommandError};
-use crate::cmdutil;
+use crate::{cmdutil, util};
 use crate::ecdsautil::parse_ecdsa_r_and_s;
 use crate::util::try_decode;
 
@@ -51,7 +51,7 @@ impl Command for CommandImpl {
         }
 
         if json_output {
-            println!("{}", serde_json::to_string_pretty(&json).unwrap());
+            util::print_pretty_json(&json);
         }
         Ok(None)
     }