key: Add super modifier

Fixes #11217

(cherry picked from commit 9f5e1736a8)

src/input_common.rs

@@ -560,6 +560,7 @@ pub(crate) fn terminal_protocols_disable_ifn() {
 
 fn parse_mask(mask: u32) -> Modifiers {
     Modifiers {
+        sup: (mask & 8) != 0,
         ctrl: (mask & 4) != 0,
         alt: (mask & 2) != 0,
         shift: (mask & 1) != 0,

src/key.rs

@@ -54,6 +54,7 @@ pub struct Modifiers {
     pub ctrl: bool,
     pub alt: bool,
     pub shift: bool,
+    pub sup: bool,
 }
 
 impl Modifiers {
@@ -62,6 +63,7 @@ const fn new() -> Self {
             ctrl: false,
             alt: false,
             shift: false,
+            sup: false,
         }
     }
     pub(crate) const ALT: Self = {
@@ -271,6 +273,7 @@ pub(crate) fn parse_keys(value: &wstr) -> Result<Vec<Key>, WString> {
                     _ if modifier == "ctrl" => modifiers.ctrl = true,
                     _ if modifier == "alt" => modifiers.alt = true,
                     _ if modifier == "shift" => modifiers.shift = true,
+                    _ if modifier == "super" => modifiers.sup = true,
                     _ => {
                         return Err(wgettext_fmt!(
                             "unknown modifier '%s' in '%s'",
@@ -407,6 +410,9 @@ fn from(key: Key) -> Self {
         if key.modifiers.ctrl {
             res.insert_utfstr(0, L!("ctrl-"));
         }
+        if key.modifiers.sup {
+            res.insert_utfstr(0, L!("super-"));
+        }
 
         res
     }