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#!/usr/bin/env bash
# ==================================================
# KoolDots (2026)
# Project URL: https://github.com/LinuxBeginnings
# License: GNU GPLv3
# SPDX-License-Identifier: GPL-3.0-or-later
# ==================================================
#
setup_default_terminal() {
echo "Setting kitty as the default terminal for Thunar and CLI apps..."
# 1. Configure XFCE/Exo (Thunar's primary helper)
# This handles "Open Terminal Here" and "Open with [CLI App]"
HELPER_DIR="$HOME/.config/xfce4"
mkdir -p "$HELPER_DIR"
KITTY_PATH="$(command -v kitty 2>/dev/null || true)"
if [ -z "$KITTY_PATH" ]; then
echo "Warning: kitty not found in PATH. Thunar may report no terminal available."
fi
# Prefer exo-preferred-applications when available (XFCE/Thunar)
if command -v exo-preferred-applications >/dev/null 2>&1; then
exo-preferred-applications --set TerminalEmulator kitty >/dev/null 2>&1 || true
fi
# Ensure helpers.rc exists and has a [Default] section
if [ ! -f "$HELPER_DIR/helpers.rc" ]; then
printf "[Default]\n" >"$HELPER_DIR/helpers.rc"
elif ! grep -q '^\[Default\]$' "$HELPER_DIR/helpers.rc"; then
printf "[Default]\n%s" "$(cat "$HELPER_DIR/helpers.rc")" >"$HELPER_DIR/helpers.rc"
fi
# Update TerminalEmulator entry in [Default] section
if grep -q '^TerminalEmulator=' "$HELPER_DIR/helpers.rc"; then
sed -i 's|^TerminalEmulator=.*|TerminalEmulator=kitty|' "$HELPER_DIR/helpers.rc"
else
sed -i '/^\[Default\]$/a TerminalEmulator=kitty' "$HELPER_DIR/helpers.rc"
fi
# Set a full path if available (GUI PATH can differ)
if [ -n "$KITTY_PATH" ]; then
if grep -q '^TerminalEmulatorPath=' "$HELPER_DIR/helpers.rc"; then
sed -i "s|^TerminalEmulatorPath=.*|TerminalEmulatorPath=$KITTY_PATH|" "$HELPER_DIR/helpers.rc"
else
sed -i "/^\[Default\]$/a TerminalEmulatorPath=$KITTY_PATH" "$HELPER_DIR/helpers.rc"
fi
fi
# 2. Create a User-Level "xterm" Shim
# Many older .desktop files and scripts have 'xterm' hardcoded.
# By placing this in ~/.local/bin, we intercept those calls.
BIN_DIR="$HOME/.local/bin"
mkdir -p "$BIN_DIR"
if ! printf "%s" "$PATH" | tr ':' '\n' | grep -qx "$BIN_DIR"; then
echo "Warning: $BIN_DIR is not in PATH for this session. GUI apps may still use /usr/bin/xterm."
fi
cat <<EOF >"$BIN_DIR/xterm"
#!/usr/bin/env bash
# ==================================================
# KoolDots (2026)
# Project URL: https://github.com/LinuxBeginnings
# License: GNU GPLv3
# SPDX-License-Identifier: GPL-3.0-or-later
# ==================================================
#
# Shim to redirect xterm calls to kitty
# Resolves Open with (vim/neovim/etc) opening in xterm
args=()
pass_through=()
while [ \$# -gt 0 ]; do
case "\$1" in
-e)
shift
if [ \$# -gt 0 ]; then
pass_through+=("\$@")
fi
break
;;
-T|-title|-geometry|-bg|-fg|-fs|-fa|-fn)
# Skip common xterm-only flags and their values
shift
[ \$# -gt 0 ] && shift
;;
-class|-name)
shift
[ \$# -gt 0 ] && shift
;;
-hold|-ls|-sb|-sk|-sr|-s)
# Ignore boolean flags that kitty doesn't understand
shift
;;
*)
args+=("\$1")
shift
;;
esac
done
if [ \${#pass_through[@]} -gt 0 ]; then
exec kitty "\${args[@]}" -- "\${pass_through[@]}"
else
exec kitty "\${args[@]}"
fi
EOF
chmod +x "$BIN_DIR/xterm"
# 3. Update GLib/GIO Default Terminal (for GNOME-based backends)
# Some distros use gsettings to define the terminal schema.
if command -v gsettings >/dev/null 2>&1; then
gsettings set org.gnome.desktop.default-applications.terminal exec 'kitty' 2>/dev/null || true
fi
# 4. Refresh Mime Database
# Ensures Thunar sees the changes to terminal handling immediately.
if command -v update-desktop-database >/dev/null 2>&1; then
update-desktop-database ~/.local/share/applications 2>/dev/null || true
fi
# 5. Hide Kitty URL Handler from "Open With"
# Prevents Kitty URL handler from showing up for text files.
USER_APP_DIR="$HOME/.local/share/applications"
mkdir -p "$USER_APP_DIR"
KITTY_URL_HANDLER=""
for dir in $XDG_DATA_DIRS /usr/local/share /usr/share; do
[ -z "$dir" ] && continue
if [ -f "$dir/applications/kitty-url-handler.desktop" ]; then
KITTY_URL_HANDLER="$dir/applications/kitty-url-handler.desktop"
break
fi
done
if [ -n "$KITTY_URL_HANDLER" ]; then
cp "$KITTY_URL_HANDLER" "$USER_APP_DIR/kitty-url-handler.desktop"
if grep -q '^NoDisplay=' "$USER_APP_DIR/kitty-url-handler.desktop"; then
sed -i 's|^NoDisplay=.*|NoDisplay=true|' "$USER_APP_DIR/kitty-url-handler.desktop"
else
printf "\nNoDisplay=true\n" >>"$USER_APP_DIR/kitty-url-handler.desktop"
fi
if grep -q '^Hidden=' "$USER_APP_DIR/kitty-url-handler.desktop"; then
sed -i 's|^Hidden=.*|Hidden=true|' "$USER_APP_DIR/kitty-url-handler.desktop"
else
printf "Hidden=true\n" >>"$USER_APP_DIR/kitty-url-handler.desktop"
fi
fi
echo "Default terminal set to kitty successfully."
}
setup_default_terminal
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