Add script to set key repeat setting in GNOME

home/.config/autostart/keyboard-repeat.desktop

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+[Desktop Entry]
+Encoding=UTF-8
+Version=0.9.4
+Type=Application
+Name=keyboard-repeat
+Comment=Sets my keyboard repeat setting in GNOME.
+Icon=/usr/share/icons/Adwaita/32x32/devices/input-keyboard.png
+Exec=keyboard-repeat
+OnlyShowIn=GNOME
+StartupNotify=false
+Terminal=false
+Hidden=false
+
+Name[en_US]=keyboard-repeat
+Comment[en_US]=Sets my keyboard repeat setting in GNOME.

home/bin/keyboard-repeat

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+#!/usr/bin/env python
+
+"""
+This script sets my keyboard repeat settings via `xset`, because the
+GNOME Shell desktop environment doesn't give any configurable setting
+to control the key repeat speed and I don't wanna fight it all the time.
+
+I set this script to run on auto-start and set my key repeat setting.
+"""
+
+import subprocess
+import os
+
+# My settings.
+settings = dict(
+    delay=200,  # Milliseconds
+    rate=100,   # Characters per second?
+)
+
+if __name__ == "__main__":
+    # Only do this for GNOME.
+    current_desktop = os.environ.get("XDG_CURRENT_DESKTOP")
+    if current_desktop is None or current_desktop.upper() == "GNOME":
+        print("Setting delay to {delay} and rate {rate}".format(**settings))
+        subprocess.call("xset r rate {delay} {rate}".format(**settings), shell=True)
+    else:
+        subprocess.call([
+            "notify-send",
+            "-u", "critical",
+            "-i", "preferences-desktop-keyboard",
+            "keyboard-repeat: Error - Are you on GNOME? "
+            "I detected {}".format(current_desktop)
+        ])