added a couple of shortcuts

calc.go

@@ -121,19 +121,27 @@ func (c *Calc) GetCompleteCustomFuncalls() func(string) []string {
 		}
 
 		for command := range c.SettingsCommands {
-			completions = append(completions, command)
+			if len(command) > 1 {
+				completions = append(completions, command)
+			}
 		}
 
 		for command := range c.ShowCommands {
-			completions = append(completions, command)
+			if len(command) > 1 {
+				completions = append(completions, command)
+			}
 		}
 
 		for command := range c.StackCommands {
-			completions = append(completions, command)
+			if len(command) > 1 {
+				completions = append(completions, command)
+			}
 		}
 
 		for command := range c.Commands {
-			completions = append(completions, command)
+			if len(command) > 1 {
+				completions = append(completions, command)
+			}
 		}
 
 		return completions

command.go

@@ -305,6 +305,15 @@ func (c *Calc) SetCommands() {
 
 	// aliases
 	c.Commands["quit"] = c.Commands["exit"]
-	c.SettingsCommands["undebug"] = c.SettingsCommands["nodebug"]
+
-	c.SettingsCommands["show"] = c.SettingsCommands["showstack"]
+	c.SettingsCommands["d"] = c.SettingsCommands["debug"]
+	c.SettingsCommands["b"] = c.SettingsCommands["batch"]
+	c.SettingsCommands["s"] = c.SettingsCommands["showstack"]
+
+	c.ShowCommands["h"] = c.ShowCommands["history"]
+	c.ShowCommands["p"] = c.ShowCommands["dump"]
+	c.ShowCommands["v"] = c.ShowCommands["vars"]
+
+	c.StackCommands["c"] = c.StackCommands["clear"]
+	c.StackCommands["u"] = c.StackCommands["undo"]
 }

rpn.go

@@ -178,28 +178,18 @@ DESCRIPTION
         [no]debug            toggle debug output (nodebug turns it off)
         [no]showstack        show the last 5 items of the stack (noshowtack turns it off)
 
-    Show commands:
+    Show commands: dump display the stack contents hex show last stack item
+    in hex form (converted to int) history display calculation history vars
+    show list of variables
 
-        dump                 display the stack contents
+    Stack manipulation commands: clear clear the whole stack shift remove
-        hex                  show last stack item in hex form (converted to int)
+    the last element of the stack reverse reverse the stack elements swap
-        history              display calculation history
+    exchange the last two stack elements dup duplicate last stack item undo
-        vars                 show list of variables
+    undo last operation edit edit the stack interactively using vi or
+    $EDITOR
 
-    Stack manipulation commands:
+    Other commands: help|? show this message manual show manual
-
+    quit|exit|c-d|c-c exit program
-        clear                clear the whole stack
-        shift                remove the last element of the stack
-        reverse              reverse the stack elements
-        swap                 exchange the last two stack elements
-        dup                  duplicate last stack item
-        undo                 undo last operation
-        edit                 edit the stack interactively using vi or $EDITOR
-
-    Other commands:
-
-        help|?               show this message
-        manual               show manual
-        quit|exit|c-d|c-c    exit program
 
     Register variables:
 
@@ -208,6 +198,17 @@ DESCRIPTION
 
     Refer to https://pkg.go.dev/math for details about those functions.
 
+    There are also a number of shortcuts for some commands available:
+
+        d    debug
+        b    batch
+        s    showstack
+        h    history
+        p    dump (aka print)
+        v    vars
+        c    clear
+        u    undo
+
 INTERACTIVE REPL
     While you can use rpn in the command-line, the best experience you'll
     have is the interactive repl (read eval print loop). Just execute "rpn"

rpn.pod

@@ -186,14 +186,12 @@ Configuration Commands:
     [no]showstack        show the last 5 items of the stack (noshowtack turns it off)
 
 Show commands:
-
     dump                 display the stack contents
     hex                  show last stack item in hex form (converted to int)
     history              display calculation history
     vars                 show list of variables
 
 Stack manipulation commands:
-
     clear                clear the whole stack
     shift                remove the last element of the stack
     reverse              reverse the stack elements
@@ -203,7 +201,6 @@ Stack manipulation commands:
     edit                 edit the stack interactively using vi or $EDITOR
 
 Other commands:
-
     help|?               show this message
     manual               show manual
     quit|exit|c-d|c-c    exit program
@@ -216,6 +213,17 @@ Register variables:
 
 Refer to https://pkg.go.dev/math for details about those functions.
 
+There are also a number of shortcuts for some commands available:
+
+    d    debug
+    b    batch
+    s    showstack
+    h    history
+    p    dump (aka print)
+    v    vars
+    c    clear
+    u    undo
+
 =head1 INTERACTIVE REPL
 
 While you can use rpn in the command-line, the best experience you'll