Add parsing support for M- for lmeta

cfg_samples/jtroo.kbd

@@ -76,10 +76,12 @@
   _    _    _              _              _    _    _
 )
 
+(defalias win M-tab)
+
 (deflayer numbers
   _    _    _    _    _    _    nlk  kp7  kp8  kp9  _    _    _    _
   _    _    _    _    _    XX   _    kp4  kp5  kp6  -    _    _    _
-  _    _    C-z  _    _    XX   _    kp1  kp2  kp3  +    _    _
+  _    _    C-z  C-y  @win XX   _    kp1  kp2  kp3  +    _    _
   _    C-z  C-x  C-c  C-v  XX   _    kp0  kp0  .    /    _
   _    _    _              _              _    _    _
 )

cfg_samples/kanata.kbd

@@ -108,10 +108,6 @@
 
   ;; tap for capslk, hold for lctl
   cap (tap-hold 200 200 caps lctl)
-
-  ;; Chords. These ones are used for copying/pasting from some Linux terminals.
-  csv C-S-v
-  csc C-S-c
 )
 
 (defalias
@@ -131,12 +127,21 @@
   ;; for modifiers like shift. You probably want to use macro instead.
   ;;
   ;; Chording can be more succinctly described by the modifier prefixes
-  ;; `C-`, `A-`, and `S-` for lctrl, lalt, lshift, but are possible by using
-  ;; multi as well.
+  ;; `C-`, `A-`, `S-`, and `M-` for lctrl, lalt, lshift, lmeta, but are possible
+  ;; by using the `multi` as well. The lmeta key is also known by some other
+  ;; names: "Windows", "GUI", "Command", "Super".
   ;;
   ;; One use case for multi could be typing an all-caps string.
   alp (multi lsft a b c d e f g h i j k l m n o p q r s t u v w x y z)
 
+  ;; Chords using the shortuct. These ones are used for copying/pasting
+  ;; from some Linux terminals.
+  csv C-S-v
+  csc C-S-c
+
+  ;; Windows shortcut for displaying all windows
+  win M-tab
+
   ;; macro accepts keys, chords, and numbers (a delay in ms). Note that numbers
   ;; will be parsed as delays, so they will need to be aliased to be used.
   lch (macro h t t p @: / / 100 l o c a l h o s t @: @8 @0 @8 @0)

src/cfg.rs

@@ -688,6 +688,12 @@ fn parse_action_atom(ac: &str, aliases: &Aliases) -> Result<&'static KanataActio
             }
             key_stack.push(KeyCode::LAlt);
             rem = rest;
+        } else if let Some(rest) = rem.strip_prefix("M-") {
+            if key_stack.contains(&KeyCode::LGui) {
+                bail!("Redundant \"M-\" in {}", ac)
+            }
+            key_stack.push(KeyCode::LGui);
+            rem = rest;
         } else if let Some(oscode) = str_to_oscode(rem) {
             key_stack.push(oscode.into());
             return Ok(sref(Action::MultipleKeyCodes(sref(key_stack).as_ref())));