From 089910ceefcf96faa38a31efdbf644fd818049c9 Mon Sep 17 00:00:00 2001
From: Julian Schuler <julianschuler@users.noreply.github.com>
Date: Thu, 24 Apr 2025 21:11:31 +0200
Subject: [PATCH 1/2] Add unit test for single key combo pressed twice

---
 tests/combo/test_combo.cpp | 15 +++++++++++++++
 tests/combo/test_combos.c  |  6 ++++--
 2 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/tests/combo/test_combo.cpp b/tests/combo/test_combo.cpp
index d78ec55990b..cc6425a94cc 100644
--- a/tests/combo/test_combo.cpp
+++ b/tests/combo/test_combo.cpp
@@ -54,3 +54,18 @@ TEST_F(Combo, combo_osmshift_tapped) {
     tap_key(key_i);
     VERIFY_AND_CLEAR(driver);
 }
+
+TEST_F(Combo, combo_single_key_twice) {
+    TestDriver driver;
+    KeymapKey  key_a(0, 0, 1, KC_A);
+    set_keymap({key_a});
+
+    EXPECT_REPORT(driver, (KC_B));
+    tap_combo({key_a});
+    VERIFY_AND_CLEAR(driver);
+
+    EXPECT_REPORT(driver, (KC_B));
+    EXPECT_EMPTY_REPORT(driver);
+    tap_combo({key_a});
+    VERIFY_AND_CLEAR(driver);
+}
diff --git a/tests/combo/test_combos.c b/tests/combo/test_combos.c
index 8dcb364c6e5..9a0465a9b47 100644
--- a/tests/combo/test_combos.c
+++ b/tests/combo/test_combos.c
@@ -4,14 +4,16 @@
 // SPDX-License-Identifier: GPL-2.0-or-later
 #include "quantum.h"
 
-enum combos { modtest, osmshift };
+enum combos { modtest, osmshift, single_key };
 
 uint16_t const modtest_combo[]  = {KC_Y, KC_U, COMBO_END};
 uint16_t const osmshift_combo[] = {KC_Z, KC_X, COMBO_END};
+uint16_t const single_key_combo[] = {KC_A, COMBO_END};
 
 // clang-format off
 combo_t key_combos[] = {
     [modtest]  = COMBO(modtest_combo, RSFT_T(KC_SPACE)),
-    [osmshift] = COMBO(osmshift_combo, OSM(MOD_LSFT))
+    [osmshift] = COMBO(osmshift_combo, OSM(MOD_LSFT)),
+    [single_key] = COMBO(single_key_combo, KC_B),
 };
 // clang-format on

From 1366509a6bb0ff82dfdf82dc52a0a3651d99b148 Mon Sep 17 00:00:00 2001
From: Julian Schuler <julianschuler@users.noreply.github.com>
Date: Thu, 24 Apr 2025 21:12:44 +0200
Subject: [PATCH 2/2] Fix single key chords not being released

---
 quantum/process_keycode/process_combo.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/quantum/process_keycode/process_combo.c b/quantum/process_keycode/process_combo.c
index c99a66a74b0..b02b7f54330 100644
--- a/quantum/process_keycode/process_combo.c
+++ b/quantum/process_keycode/process_combo.c
@@ -347,6 +347,10 @@ void apply_combo(uint16_t combo_index, combo_t *combo) {
             qrecord->combo_index = combo_index;
             ACTIVATE_COMBO(combo);
 
+            if (key_count == 1) {
+                release_combo(combo_index, combo);
+            }
+
             break;
         } else {
             // key was part of the combo but not the last one, "disable" it