From c1ce38daaa9b1a44b6019283de215972dcf84ef2 Mon Sep 17 00:00:00 2001
From: CJ van den Berg <cj@vdbonline.com>
Date: Sun, 9 Jun 2024 00:29:12 +0200
Subject: [PATCH] fix: ignore extended modifier bits

---
 src/renderer/vaxis/renderer.zig | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/src/renderer/vaxis/renderer.zig b/src/renderer/vaxis/renderer.zig
index f2dbf9d..8f30693 100644
--- a/src/renderer/vaxis/renderer.zig
+++ b/src/renderer/vaxis/renderer.zig
@@ -146,7 +146,8 @@ pub fn leave_alternate_screen(self: *Self) void {
 pub fn process_input_event(self: *Self, input_: []const u8) !void {
     const event = std.mem.bytesAsValue(vaxis.Event, input_);
     switch (event.*) {
-        .key_press => |key_| {
+        .key_press => |key__| {
+            const key_ = filter_mods(key__);
             try self.sync_mod_state(key_.codepoint, key_.mods);
             const cbor_msg = try self.fmtmsg(.{
                 "I",
@@ -162,7 +163,8 @@ pub fn process_input_event(self: *Self, input_: []const u8) !void {
                 return e;
             }) {} else if (self.dispatch_input) |f| f(self.handler_ctx, cbor_msg);
         },
-        .key_release => |*key_| {
+        .key_release => |key__| {
+            const key_ = filter_mods(key__);
             const cbor_msg = try self.fmtmsg(.{
                 "I",
                 event_type.RELEASE,
@@ -369,6 +371,16 @@ fn send_sync_key(self: *Self, event_type_: usize, keypress: u32, key_string: []c
     );
 }
 
+fn filter_mods(key_: vaxis.Key) vaxis.Key {
+    var key__ = key_;
+    key__.mods = .{
+        .shift = key_.mods.shift,
+        .alt = key_.mods.alt,
+        .ctrl = key_.mods.ctrl,
+    };
+    return key__;
+}
+
 const Loop = struct {
     tty: *vaxis.Tty,
     vaxis: *vaxis.Vaxis,