fix(command): separator option is ignored

examples/command/list-option-type.ts

@@ -6,7 +6,7 @@ const { options } = await new Command()
     // comma separated list
     .option( '-l, --list <items:number[]>', 'comma separated list of numbers.' )
     // space separated list
-    .option( '-o, --other-list <items:string[]>', 'comma separated list of strings.', { separator: ' ' } )
+    .option( '-o, --other-list <items:string[]>', 'space separated list of strings.', { separator: ' ' } )
     .parse( Deno.args );
 
 console.log( options );

packages/command/lib/base-command.ts

@@ -355,6 +355,14 @@ export class BaseCommand<O = any, A extends Array<any> = any> {
             ...opts
         };
 
+        if ( option.separator ) {
+            for ( const arg of args ) {
+                if ( arg.list ) {
+                    arg.separator = option.separator;
+                }
+            }
+        }
+
         for ( const part of result.args ) {
 
             const arg = part.trim();

packages/command/test/option/list_test.ts

@@ -0,0 +1,25 @@
+import { Command } from '../../lib/command.ts';
+import { assertEquals } from '../lib/assert.ts';
+
+const cmd = new Command()
+    .throwErrors()
+    // comma separated list
+    .option( '-l, --list <items:number[]>', 'comma separated list of numbers.' )
+    // space separated list
+    .option( '-o, --other-list <items:string[]>', 'space separated list of strings.', { separator: ' ' } );
+
+Deno.test( 'command: list option', async () => {
+
+    const { options, args } = await cmd.parse( [ '-l', '1,2,3' ] );
+
+    assertEquals( options, { list: [ 1, 2, 3 ] } );
+    assertEquals( args, [] );
+} );
+
+Deno.test( 'command: list option separator', async () => {
+
+    const { options, args } = await cmd.parse( [ '-o', '1 2 3' ] );
+
+    assertEquals( options, { otherList: [ '1', '2', '3' ] } );
+    assertEquals( args, [] );
+} );