From 67be309e3f43ab91c759368d3d7d4fd396182b94 Mon Sep 17 00:00:00 2001
From: Mitchell Hashimoto <m@mitchellh.com>
Date: Mon, 22 Dec 2025 12:50:39 -0800
Subject: [PATCH] input: Trigger.eql

---
 src/input/Binding.zig | 73 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 73 insertions(+)

diff --git a/src/input/Binding.zig b/src/input/Binding.zig
index b4f519379..0d52f23cd 100644
--- a/src/input/Binding.zig
+++ b/src/input/Binding.zig
@@ -1870,6 +1870,19 @@ pub const Trigger = struct {
         return array;
     }
 
+    /// Returns true if two triggers are equal.
+    pub fn eql(self: Trigger, other: Trigger) bool {
+        if (self.mods != other.mods) return false;
+        const self_tag = std.meta.activeTag(self.key);
+        const other_tag = std.meta.activeTag(other.key);
+        if (self_tag != other_tag) return false;
+        return switch (self.key) {
+            .physical => |v| v == other.key.physical,
+            .unicode => |v| v == other.key.unicode,
+            .catch_all => true,
+        };
+    }
+
     /// Convert the trigger to a C API compatible trigger.
     pub fn cval(self: Trigger) C {
         return .{
@@ -2974,6 +2987,66 @@ test "parse: all triggers" {
     }
 }
 
+test "Trigger: eql" {
+    const testing = std.testing;
+
+    // Equal physical keys
+    {
+        const t1: Trigger = .{ .key = .{ .physical = .arrow_up }, .mods = .{ .ctrl = true } };
+        const t2: Trigger = .{ .key = .{ .physical = .arrow_up }, .mods = .{ .ctrl = true } };
+        try testing.expect(t1.eql(t2));
+    }
+
+    // Different physical keys
+    {
+        const t1: Trigger = .{ .key = .{ .physical = .arrow_up }, .mods = .{ .ctrl = true } };
+        const t2: Trigger = .{ .key = .{ .physical = .arrow_down }, .mods = .{ .ctrl = true } };
+        try testing.expect(!t1.eql(t2));
+    }
+
+    // Different mods
+    {
+        const t1: Trigger = .{ .key = .{ .physical = .arrow_up }, .mods = .{ .ctrl = true } };
+        const t2: Trigger = .{ .key = .{ .physical = .arrow_up }, .mods = .{ .shift = true } };
+        try testing.expect(!t1.eql(t2));
+    }
+
+    // Equal unicode keys
+    {
+        const t1: Trigger = .{ .key = .{ .unicode = 'a' }, .mods = .{} };
+        const t2: Trigger = .{ .key = .{ .unicode = 'a' }, .mods = .{} };
+        try testing.expect(t1.eql(t2));
+    }
+
+    // Different unicode keys
+    {
+        const t1: Trigger = .{ .key = .{ .unicode = 'a' }, .mods = .{} };
+        const t2: Trigger = .{ .key = .{ .unicode = 'b' }, .mods = .{} };
+        try testing.expect(!t1.eql(t2));
+    }
+
+    // Different key types
+    {
+        const t1: Trigger = .{ .key = .{ .unicode = 'a' }, .mods = .{} };
+        const t2: Trigger = .{ .key = .{ .physical = .key_a }, .mods = .{} };
+        try testing.expect(!t1.eql(t2));
+    }
+
+    // catch_all
+    {
+        const t1: Trigger = .{ .key = .catch_all, .mods = .{} };
+        const t2: Trigger = .{ .key = .catch_all, .mods = .{} };
+        try testing.expect(t1.eql(t2));
+    }
+
+    // catch_all with different mods
+    {
+        const t1: Trigger = .{ .key = .catch_all, .mods = .{} };
+        const t2: Trigger = .{ .key = .catch_all, .mods = .{ .alt = true } };
+        try testing.expect(!t1.eql(t2));
+    }
+}
+
 test "parse: modifier aliases" {
     const testing = std.testing;