Take operands in account when configuring automatic help

.gitignore

@@ -13,3 +13,6 @@
 
 # VSCode config
 .vscode
+
+# idea
+.idea

cmd.go

@@ -140,7 +140,7 @@ func (cmd *Cmd) setupHelp() {
 		return
 	}
 
-	if (len(cmd.optentries) > 0 || len(cmd.commands) > 0) && cmd.shortopt["-h"] == nil {
+	if (len(cmd.optentries) > 0 || len(cmd.commands) > 0 || len(cmd.operands) > 0) && cmd.shortopt["-h"] == nil {
 		cmd.Bool("help", "h", false, "Show this help message.")
 	}
 }

help_test.go

@@ -109,6 +109,16 @@ func TestArgs(t *testing.T) {
 	}
 }
 
+func TestHelpMessageWithOperands(t *testing.T) {
+	app := libcmd.NewApp("app", "some brief description")
+	app.AddOperand("src", "?")
+	app.AddOperand("dst", "*")
+
+	if err := compareHelpOutput(app, []string{"-h", "test", "test2"}, "testdata/help-message-with-operands.golden"); err != nil {
+		t.Error(err)
+	}
+}
+
 func TestArgsPartial(t *testing.T) {
 	app := libcmd.NewApp("app", "some brief description")
 	app.Long = "this is a very long description"

opt.go

@@ -150,7 +150,7 @@ func (cmd *Cmd) doParse(args []string) error {
 			return unknownArgErr{arg: arg.name}
 		}
 
-		// some argument types have autmatic values in certain cases
+		// some argument types have automatic values in certain cases
 		// fill them in, if necessary
 		entry.fillAutoValue(arg)
 

testdata/help-message-with-operands.golden

@@ -0,0 +1,7 @@
+app - some brief description
+
+USAGE: app [OPTIONS...] [src] [dst...]
+
+Options:
+  -h, --help
+      Show this help message.