src/jdk.jshell/share/classes/jdk/internal/jshell/tool/JShellTool.java

rev 47329 : 8189102: All tools should support -?, -h and --help

@@ -478,11 +478,11 @@
         private final OptionSpecBuilder argQ = parser.accepts("q");
         private final OptionSpecBuilder argS = parser.accepts("s");
         private final OptionSpecBuilder argV = parser.accepts("v");
         private final OptionSpec<String> argR = parser.accepts("R").withRequiredArg();
         private final OptionSpec<String> argC = parser.accepts("C").withRequiredArg();
-        private final OptionSpecBuilder argHelp = parser.acceptsAll(asList("h", "help"));
+        private final OptionSpecBuilder argHelp = parser.acceptsAll(asList("?", "h", "help"));
         private final OptionSpecBuilder argVersion = parser.accepts("version");
         private final OptionSpecBuilder argFullVersion = parser.accepts("full-version");
         private final OptionSpecBuilder argShowVersion = parser.accepts("show-version");
         private final OptionSpecBuilder argHelpExtra = parser.acceptsAll(asList("X", "help-extra"));