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commands: print help if no sub[sub]command given

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I didn't know about the Clap setting to print help if no subcommand
was given, so I had reimplemented that myself for the top-level
command. However, if the user did e.g. `jj git`, they'd get a
crash. This commit fixes that by turning on the setting.
This commit is contained in:
Martin von Zweigbergk 2020-12-30 00:15:02 -08:00
parent 3a67952215
commit aea1ea3707
1 changed files with 5 additions and 7 deletions
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12
src/commands.rs
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@ -409,6 +409,7 @@ fn get_app<'a, 'b>() -> App<'a, 'b> {
let operation_command = SubCommand::with_name("operation")
.alias("op")
.about("commands for working with the operation log")
.setting(clap::AppSettings::SubcommandRequiredElseHelp)
.subcommand(SubCommand::with_name("log").about("show the operation log"))
.subcommand(
SubCommand::with_name("undo")
@ -422,6 +423,7 @@ fn get_app<'a, 'b>() -> App<'a, 'b> {
);
let git_command = SubCommand::with_name("git")
.about("commands for working with the underlying git repo")
.setting(clap::AppSettings::SubcommandRequiredElseHelp)
.subcommand(
SubCommand::with_name("push")
.about("push a revision to a git remote branch")
@ -451,6 +453,7 @@ fn get_app<'a, 'b>() -> App<'a, 'b> {
);
let bench_command = SubCommand::with_name("bench")
.about("commands for benchmarking internal operations")
.setting(clap::AppSettings::SubcommandRequiredElseHelp)
.subcommand(
SubCommand::with_name("commonancestors")
.about("finds the common ancestor(s) of a set of commits")
@ -476,6 +479,7 @@ fn get_app<'a, 'b>() -> App<'a, 'b> {
);
let debug_command = SubCommand::with_name("debug")
.about("low-level commands not intended for users")
.setting(clap::AppSettings::SubcommandRequiredElseHelp)
.subcommand(
SubCommand::with_name("resolverev")
.about("resolves a revision identifier to its full id")
@ -498,6 +502,7 @@ fn get_app<'a, 'b>() -> App<'a, 'b> {
.subcommand(SubCommand::with_name("reindex").about("rebuild commit index"));
App::new("Jujube")
.global_setting(clap::AppSettings::ColoredHelp)
.setting(clap::AppSettings::SubcommandRequiredElseHelp)
.version("0.0.1")
.author("Martin von Zweigbergk <martinvonz@google.com>")
.about("My source control tool")
@ -2028,13 +2033,6 @@ where
T: Into<OsString> + Clone,
{
let matches = get_app().get_matches_from(args);
if matches.subcommand_name().is_none() {
let mut help_text_buf = Vec::new();
get_app().write_long_help(&mut help_text_buf).unwrap();
ui.write(String::from_utf8(help_text_buf).unwrap().as_str());
ui.write("\n");
return 1;
}
let result = if let Some(sub_matches) = matches.subcommand_matches("init") {
cmd_init(&mut ui, &matches, &sub_matches)
} else if let Some(sub_matches) = matches.subcommand_matches("checkout") {