docs: use :kbd: role in sphinx docs

Sphinx supports the :kbd: role for notating keyboard input. They get
formatted as <kbd> HTML elements in the readthedocs theme we currently
use for Sphinx.

Besides the better visual formatting, it also helps with accessibility
as screen readers can announce the semantics of the <kbd> element to the
user.

Signed-off-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Message-ID: <20250709-docs_rst_improvements-v2-1-cb5096ad0022@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-ID: <20250710104531.3099313-7-alex.bennee@linaro.org>

docs/devel/testing/main.rst

@@ -604,9 +604,9 @@ below steps to debug it:
 2. Add "V=1" to the command line, try again, to see the verbose output.
 3. Further add "DEBUG=1" to the command line. This will pause in a shell prompt
    in the container right before testing starts. You could either manually
-   build QEMU and run tests from there, or press Ctrl-D to let the Docker
+   build QEMU and run tests from there, or press :kbd:`Ctrl+d` to let the Docker
    testing continue.
-4. If you press Ctrl-D, the same building and testing procedure will begin, and
+4. If you press :kbd:`Ctrl+d`, the same building and testing procedure will begin, and
    will hopefully run into the error again. After that, you will be dropped to
    the prompt for debug.
 

docs/system/images.rst

@@ -30,7 +30,7 @@ Snapshot mode
 If you use the option ``-snapshot``, all disk images are considered as
 read only. When sectors in written, they are written in a temporary file
 created in ``/tmp``. You can however force the write back to the raw
-disk images by using the ``commit`` monitor command (or C-a s in the
+disk images by using the ``commit`` monitor command (or :kbd:`Ctrl+a s` in the
 serial console).
 
 .. _vm_005fsnapshots:

docs/system/keys.rst.inc

@@ -1,36 +1,37 @@
 During the graphical emulation, you can use special key combinations from
-the following table to change modes. By default the modifier is Ctrl-Alt
+the following table to change modes. By default the modifier is :kbd:`Ctrl+Alt`
 (used in the table below) which can be changed with ``-display`` suboption
 ``mod=`` where appropriate. For example, ``-display sdl,
-grab-mod=lshift-lctrl-lalt`` changes the modifier key to Ctrl-Alt-Shift,
-while ``-display sdl,grab-mod=rctrl`` changes it to the right Ctrl key.
+grab-mod=lshift-lctrl-lalt`` changes the modifier key to :kbd:`Ctrl+Alt+Shift`,
+while ``-display sdl,grab-mod=rctrl`` changes it to the right :kbd:`Ctrl` key.
 
-Ctrl-Alt-f
-   Toggle full screen
+.. list-table:: Multiplexer Keys
+  :widths: 10 90
+  :header-rows: 1
 
-Ctrl-Alt-+
-   Enlarge the screen
+  * - Key Sequence
+    - Action
 
-Ctrl-Alt\--
-   Shrink the screen
+  * - :kbd:`Ctrl+Alt+f`
+    - Toggle full screen
 
-Ctrl-Alt-u
-   Restore the screen's un-scaled dimensions
+  * - :kbd:`Ctrl+Alt++`
+    - Enlarge the screen
 
-Ctrl-Alt-n
-   Switch to virtual console 'n'. Standard console mappings are:
+  * - :kbd:`Ctrl+Alt+-`
+    - Shrink the screen
 
-   *1*
-      Target system display
+  * - :kbd:`Ctrl+Alt+u`
+    - Restore the screen's un-scaled dimensions
 
-   *2*
-      Monitor
+  * - :kbd:`Ctrl+Alt+n`
+    - Switch to virtual console 'n'. Standard console mappings are:
 
-   *3*
-      Serial port
+      - *1*: Target system display
+      - *2*: Monitor
+      - *3*: Serial port
+  * - :kbd:`Ctrl+Alt+g`
+    - Toggle mouse and keyboard grab.
 
-Ctrl-Alt-g
-   Toggle mouse and keyboard grab.
-
-In the virtual consoles, you can use Ctrl-Up, Ctrl-Down, Ctrl-PageUp and
-Ctrl-PageDown to move in the back log.
+In the virtual consoles, you can use :kbd:`Ctrl+Up`, :kbd:`Ctrl+Down`, :kbd:`Ctrl+PageUp` and
+:kbd:`Ctrl+PageDown` to move in the back log.

docs/system/linuxboot.rst

@@ -26,5 +26,5 @@ virtual serial port and the QEMU monitor to the console with the
    |qemu_system| -kernel bzImage -drive file=rootdisk.img,format=raw \
                     -append "root=/dev/sda console=ttyS0" -nographic
 
-Use Ctrl-a c to switch between the serial console and the monitor (see
+Use :kbd:`Ctrl+a c` to switch between the serial console and the monitor (see
 :ref:`GUI_keys`).

docs/system/mux-chardev.rst.inc

@@ -1,27 +1,33 @@
 During emulation, if you are using a character backend multiplexer
 (which is the default if you are using ``-nographic``) then several
 commands are available via an escape sequence. These key sequences all
-start with an escape character, which is Ctrl-a by default, but can be
+start with an escape character, which is :kbd:`Ctrl+a` by default, but can be
 changed with ``-echr``. The list below assumes you're using the default.
 
-Ctrl-a h
-   Print this help
+.. list-table:: Multiplexer Keys
+  :widths: 20 80
+  :header-rows: 1
 
-Ctrl-a x
-   Exit emulator
+  * - Key Sequence
+    - Action
 
-Ctrl-a s
-   Save disk data back to file (if -snapshot)
+  * - :kbd:`Ctrl+a h`
+    - Print this help
 
-Ctrl-a t
-   Toggle console timestamps
+  * - :kbd:`Ctrl+a x`
+    - Exit emulator
 
-Ctrl-a b
-   Send break (magic sysrq in Linux)
+  * - :kbd:`Ctrl+a s`
+    - Save disk data back to file (if -snapshot)
 
-Ctrl-a c
-   Rotate between the frontends connected to the multiplexer (usually
-   this switches between the monitor and the console)
+  * - :kbd:`Ctrl+a t`
+    - Toggle console timestamps
 
-Ctrl-a Ctrl-a
-   Send the escape character to the frontend
+  * - :kbd:`Ctrl+a b`
+    - Send break (magic sysrq in Linux)
+
+  * - :kbd:`Ctrl+a c`
+    - Rotate between the frontends connected to the multiplexer (usually this switches between the monitor and the console)
+
+  * - :kbd:`Ctrl+a Ctrl+a`
+    - Send the escape character to the frontend