fix(help): fix generated help when using default()

When using .default(), generated help using `--help` would only show the default command. WIth this
fix, all commands are shown.

fixes #196

src/program/index.ts

@@ -62,6 +62,8 @@ export class Program extends EventEmitter {
  private _discoveryPath?: string
  private _discoveredCommands?: Command[]
 
+ private argv: string[] = []
+
  /**
  * Number validator. Check that the value looks like a numeric one
  * and cast the provided value to a javascript `Number`.
@@ -529,6 +531,13 @@ export class Program extends EventEmitter {
  return this
  }
 
+ /**
+ * Returns the raw argv array
+ */
+ public getRawArgv() {
+ return this.argv
+ }
+
  /**
  * Run the program by parsing command line arguments.
  * Caporal will automatically detect command line arguments from `process.argv` values,
@@ -561,6 +570,8 @@ export class Program extends EventEmitter {
  }
  }
 
+ this.argv = argv
+
  /*
  Search for the command from args, then, if a default command exists,
  take it, otherwise take the command attached to the program,
@@ -591,7 +602,22 @@ export class Program extends EventEmitter {
  * @param argv
  */
  private async findCommand(argv: string[]): ReturnType<typeof findCommand> {
- return (await findCommand(this, argv)) || this.defaultCommand || this._progCommand
+ const cmd = await findCommand(this, argv)
+ if (cmd) {
+ return cmd
+ }
+ /**
+ * If we've been asked for help (and only help) and there is no progCommand,
+ * so we should return undefined in order for the help command to display
+ * the global help.
+ * Fixes this particular use case: Fixes this particular use case:
+ * https://github.com/mattallty/Caporal.js/issues/196
+ */
+ if (argv.every((arg) => arg === "--help") && !this._progCommand) {
+ return
+ }
+
+ return this.defaultCommand || this._progCommand
  }
 
  /**