Rename CLI flags to subcommands (#2212)

cli/flags.rs

@@ -34,14 +34,9 @@ pub fn create_cli_app<'a, 'b>() -> App<'a, 'b> {
  .global_settings(&[AppSettings::ColorNever])
  .settings(&[
  AppSettings::AllowExternalSubcommands,
- AppSettings::DisableHelpSubcommand,
+ AppSettings::DisableVersion,
  ]).after_help(ENV_VARIABLES_HELP)
  .arg(
- Arg::with_name("version")
- .short("v")
- .long("version")
- .help("Print the version"),
- ).arg(
  Arg::with_name("allow-read")
  .long("allow-read")
  .help("Allow file system read access"),
@@ -95,7 +90,8 @@ pub fn create_cli_app<'a, 'b>() -> App<'a, 'b> {
  .use_delimiter(true)
  .require_equals(true)
  .help("Set V8 command line options"),
- ).subcommand(
+ ).subcommand(SubCommand::with_name("version").about("Print the version"))
+ .subcommand(
  SubCommand::with_name("fetch")
  .setting(AppSettings::DisableVersion)
  .about("Fetch the dependencies")
@@ -205,7 +201,7 @@ mod tests {
 
  #[test]
  fn test_set_flags_1() {
- let flags = flags_from_vec(svec!["deno", "--version"]);
+ let flags = flags_from_vec(svec!["deno", "version"]);
  assert_eq!(
  flags,
  DenoFlags {

website/manual.md

@@ -553,7 +553,6 @@ FLAGS:
  --no-prompt Do not use prompts
  -r, --reload Reload source code cache (recompile TypeScript)
  --v8-options Print V8 command line options
- -v, --version Print the version
 
 OPTIONS:
  --v8-flags=<v8-flags> Set V8 command line options
@@ -563,8 +562,10 @@ SUBCOMMANDS:
  eval Eval script
  fetch Fetch the dependencies
  fmt Format files
+ help Prints this message or the help of the given subcommand(s)
  info Show source file related info
  types Print runtime TypeScript declarations
+ version Print the version
 
 ENVIRONMENT VARIABLES:
  DENO_DIR Set deno's base directory