Show help for text commands when used with no arguments

Author: FloatingMilkshake

Commands/GlobalCmds.cs

@@ -11,7 +11,7 @@ public class GlobalCmds
         [Command("helptextcmd"), Description("Displays command help.")]
         [TextAlias("help")]
         [AllowedProcessors(typeof(TextCommandProcessor))]
-        public async Task Help(CommandContext ctx, [Description("Command to provide help for."), RemainingText] string command = "")
+        public static async Task Help(CommandContext ctx, [Description("Command to provide help for."), RemainingText] string command = "")
         {
             var commandSplit = command.Split(' ');
 
@@ -319,7 +319,7 @@ public class Reminder
         // Runs command context checks manually. Returns a list of failed checks.
         // Unfortunately DSharpPlus.Commands does not provide a way to execute a command's context checks manually,
         // so this will have to do. This may not include all checks, but it includes everything I could think of. -Milkshake
-        private async Task<IEnumerable<ContextCheckAttribute>> CheckPermissionsAsync(CommandContext ctx, Command cmd)
+        private static async Task<IEnumerable<ContextCheckAttribute>> CheckPermissionsAsync(CommandContext ctx, Command cmd)
         {
             var contextChecks = cmd.Attributes.Where(x => x is ContextCheckAttribute);
             var failedChecks = new List<ContextCheckAttribute>();

Events/ErrorEvents.cs

@@ -1,4 +1,5 @@
-using static Cliptok.Program;
+using DSharpPlus.Commands.Converters.Results;
+using static Cliptok.Program;
 
 namespace Cliptok.Events
 {
@@ -32,6 +33,12 @@ public static async Task TextCommandErrored(CommandErroredEventArgs e)
 
             if (e.Exception is CommandNotFoundException && (e.Context.Command is null || commandName != "help"))
                 return;
+            
+            if (e.Exception is ArgumentParseException && e.Context.Arguments.All(x => x.Value is null or ArgumentNotParsedResult or Optional<ArgumentNotParsedResult>))
+            {
+                await Commands.GlobalCmds.Help(e.Context, e.Context.Command.Name);
+                return;
+            }
 
             // avoid conflicts with modmail
             if (commandName == "edit" || commandName.Contains("timestamp"))