input: parse triggers with codepoints that map to keys as translated

Fixes #4146

This makes it so that keys such as `cmd+1` and `cmd+one` are identical.

src/config/Config.zig

@@ -4746,9 +4746,11 @@ pub const Keybinds = struct {
         try list.parseCLI(alloc, "ctrl+z>2=goto_tab:2");
         try list.formatEntry(formatterpkg.entryFormatter("keybind", buf.writer()));
 
+        // Note they turn into translated keys because they match
+        // their ASCII mapping.
         const want =
-            \\keybind = ctrl+z>1=goto_tab:1
+            \\keybind = ctrl+z>two=goto_tab:2
-            \\keybind = ctrl+z>2=goto_tab:2
+            \\keybind = ctrl+z>one=goto_tab:1
             \\
         ;
         try std.testing.expectEqualStrings(want, buf.items);

src/input/Binding.zig

@@ -1019,6 +1019,14 @@ pub const Trigger = struct {
                 const cp = it.nextCodepoint() orelse break :unicode;
                 if (it.nextCodepoint() != null) break :unicode;
 
+                // If this is ASCII and we have a translated key, set that.
+                if (std.math.cast(u8, cp)) |ascii| {
+                    if (key.Key.fromASCII(ascii)) |k| {
+                        result.key = .{ .translated = k };
+                        continue :loop;
+                    }
+                }
+
                 result.key = .{ .unicode = cp };
                 continue :loop;
             }
@@ -1554,6 +1562,19 @@ test "parse: triggers" {
         try parseSingle("a=ignore"),
     );
 
+    // unicode keys that map to translated
+    try testing.expectEqual(Binding{
+        .trigger = .{ .key = .{ .translated = .one } },
+        .action = .{ .ignore = {} },
+    }, try parseSingle("1=ignore"));
+    try testing.expectEqual(Binding{
+        .trigger = .{
+            .mods = .{ .super = true },
+            .key = .{ .translated = .period },
+        },
+        .action = .{ .ignore = {} },
+    }, try parseSingle("cmd+.=ignore"));
+
     // single modifier
     try testing.expectEqual(Binding{
         .trigger = .{

src/input/key.zig

@@ -729,7 +729,9 @@ pub const Key = enum(c_int) {
         .{ '\t', .tab },
 
         // Keypad entries. We just assume keypad with the kp_ prefix
-        // so that has some special meaning. These must also always be last.
+        // so that has some special meaning. These must also always be last,
+        // so that our `fromASCII` function doesn't accidentally map them
+        // over normal numerics and other keys.
         .{ '0', .kp_0 },
         .{ '1', .kp_1 },
         .{ '2', .kp_2 },