From 7b782d8f7d2dc98e9dccd3b88f6793a0c2b20aca Mon Sep 17 00:00:00 2001
From: Justin Lovinger <git@justinlovinger.com>
Date: Tue, 10 Feb 2026 22:37:44 +0000
Subject: [PATCH] Fix keys with multi-character labels causing issues with
 swiping

Signed-off-by: Maarten van Gompel <proycon@anaproy.nl>
---
 keyboard.c | 33 +++++++++++++++++++++++++++++----
 keyboard.h |  1 +
 2 files changed, 30 insertions(+), 4 deletions(-)

diff --git a/keyboard.c b/keyboard.c
index 7e407e3..4903399 100644
--- a/keyboard.c
+++ b/keyboard.c
@@ -553,9 +553,13 @@ kbd_press_key(struct kbd *kb, struct key *k, uint32_t time)
 void
 kbd_print_key_stdout(struct kbd *kb, struct key *k)
 {
-    /* printed keys may slightly differ from the actual output
+    /* Printed keys may slightly differ from the actual output
      * we generally print what is on the key LABEL and only support the normal
-     * and shift layers. Other modifiers produce no output (Ctrl,Alt)
+     * and shift layers. Other modifiers produce no output (Ctrl,Alt).
+     * If a label has more than one character,
+     * only the first character is printed,
+     * because downpipe programs otherwise have no way of differentiating a swipe
+     * from a single keypress.
      * */
 
     bool handled = true;
@@ -584,13 +588,34 @@ kbd_print_key_stdout(struct kbd *kb, struct key *k)
     if (!handled) {
         if ((kb->mods & Shift) || 
             ((kb->mods & CapsLock) & (strlen(k->label) == 1 && isalpha(k->label[0]))))
-            printf("%s", k->shift_label);
+            kbd_print_first_utf8_char_stdout(k->shift_label);
         else if (!(kb->mods & Ctrl) && !(kb->mods & Alt) && !(kb->mods & Super))
-            printf("%s", k->label);
+            kbd_print_first_utf8_char_stdout(k->label);
     }
     fflush(stdout);
 }
 
+void kbd_print_first_utf8_char_stdout(const char *str) {
+    unsigned char c = (unsigned char)str[0];
+    int len;
+
+    if ((c & 0x80) == 0) {
+        len = 1;
+    } else if ((c & 0xE0) == 0xC0) {
+        len = 2;
+    } else if ((c & 0xF0) == 0xE0) {
+        len = 3;
+    } else if ((c & 0xF8) == 0xF0) {
+        len = 4;
+    } else {
+        len = 1; // Invalid UTF-8
+    }
+
+    for (int i = 0; i < len && str[i] != '\0'; i++) {
+        putchar(str[i]);
+    }
+}
+
 void
 kbd_clear_last_popup(struct kbd *kb)
 {
diff --git a/keyboard.h b/keyboard.h
index 3622da0..dc7e055 100644
--- a/keyboard.h
+++ b/keyboard.h
@@ -141,6 +141,7 @@ void kbd_release_key(struct kbd *kb, uint32_t time);
 void kbd_motion_key(struct kbd *kb, uint32_t time, uint32_t x, uint32_t y);
 void kbd_press_key(struct kbd *kb, struct key *k, uint32_t time);
 void kbd_print_key_stdout(struct kbd *kb, struct key *k);
+void kbd_print_first_utf8_char_stdout(const char *str);
 void kbd_clear_last_popup(struct kbd *kb);
 void kbd_draw_key(struct kbd *kb, struct key *k, enum key_draw_type);
 void kbd_draw_layout(struct kbd *kb);