From bd90e29e7a942dd75b140376c16cd0d9df750a4a Mon Sep 17 00:00:00 2001
From: Rick Peters <rickpeters@upriser.nl>
Date: Thu, 24 Sep 2026 13:28:14 +0200
Subject: [PATCH] feat: Left/Right arrows choose on the "Boot into" row
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Left = gamescope, right = desktop (Space still switches); the row says ←/→ choose and the key help lists Left/Right.
---
 CHANGELOG.md |  5 ++++-
 README.md    |  3 ++-
 lib/menu.sh  | 11 ++++++++---
 3 files changed, 14 insertions(+), 5 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index c4972c0..8aa96d1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,8 +16,11 @@ one per merged pull request.
     it. Choosing desktop turns the conversion on; turning the conversion off
     resets it to gamescope.
   - The later menu items move down one (BIOS is now 8 on a Steam Machine).
-- **feat: "Boot into" is a sub-option of the conversion**
+- `4895de3` **feat: "Boot into" is a sub-option of the conversion**
   - Shown indented under the SteamOS conversion, and only while it's ticked.
+- **feat: Left/Right arrows choose on the "Boot into" row**
+  - Left = gamescope, right = desktop (Space still switches); the row says
+    "←/→ choose" and the key help lists Left/Right.
 
 ## 0.9.1 - 2026-09-24 (#10)
 
diff --git a/README.md b/README.md
index 6e2587b..3e15de8 100644
--- a/README.md
+++ b/README.md
@@ -74,7 +74,8 @@ Run it as yourself, not as root. You'll see a checklist:
   Up/Down move   Space select   Enter run   a run + re-apply what's on   q quit
 ```
 
-Move with the **arrow keys**, tick or untick with **Space**, and press
+Move with the **arrow keys**, tick or untick with **Space** (on the **Boot
+into** row, **Left/Right** choose gamescope or desktop), and press
 **Enter** to run. "now:" shows what's on at the moment. Below the list, every
 installed kernel is shown with its headers and Steam controller driver; on a
 Steam Machine also whether the LED bar driver is built for it, and whether
diff --git a/lib/menu.sh b/lib/menu.sh
index e053724..4f8e643 100644
--- a/lib/menu.sh
+++ b/lib/menu.sh
@@ -140,8 +140,9 @@ draw_menu_tui() {
             # Indented under the conversion, whose sub-option it is.
             line="$(boot_choice "${WANTED[boot]}")"
             line="    └ ${line/\[/[${c_green}}"; line="${line/\]/${c_reset}]}"
-            state="  (now: gamescope)"; [[ "${CURRENT[boot]}" == 1 ]] && state="  (now: desktop)"
-            [[ "${CURRENT[gaming]}" == 1 ]] || state=""
+            local mode=gamescope; [[ "${CURRENT[boot]}" == 1 ]] && mode=desktop
+            state="  (${c_bold}←/→${c_reset} choose)"
+            [[ "${CURRENT[gaming]}" == 1 ]] && state="  (now: $mode; ${c_bold}←/→${c_reset} choose)"
         fi
         if ! component_selectable "$c"; then
             # Greyed out: nothing to do (e.g. BIOS already up to date).
@@ -158,7 +159,8 @@ draw_menu_tui() {
     echo
     echo -e "$KERNEL_OVERVIEW"
     echo
-    echo -e "  ${c_bold}Up/Down${c_reset} move   ${c_bold}Space${c_reset} select   ${c_bold}Enter${c_reset} run   ${c_bold}a${c_reset} run + re-apply what's on   ${c_bold}q${c_reset} quit"
+    echo -e "  ${c_bold}Up/Down${c_reset} move   ${c_bold}Space${c_reset} select   ${c_bold}Left/Right${c_reset} choose   ${c_bold}Enter${c_reset} run"
+    echo -e "  ${c_bold}a${c_reset} run + re-apply what's on   ${c_bold}q${c_reset} quit"
 }
 
 run_menu_tui() {
@@ -179,6 +181,9 @@ run_menu_tui() {
             $'\e[A'|k) (( cursor = (cursor + count - 1) % count )) ;;
             $'\e[B'|j) (( cursor = (cursor + 1) % count )) ;;
             " ") toggle_component "${MENU_ITEMS[$cursor]}" ;;
+            # On the "Boot into" row: left = gamescope, right = desktop.
+            $'\e[D'|h) [[ "${MENU_ITEMS[$cursor]}" == boot && "${WANTED[boot]}" == 1 ]] && toggle_component boot ;;
+            $'\e[C'|l) [[ "${MENU_ITEMS[$cursor]}" == boot && "${WANTED[boot]}" == 0 ]] && toggle_component boot ;;
             "") break ;;
             a|A) REAPPLY=true; break ;;
             q|Q) tput cnorm 2>/dev/null; echo; return 1 ;;