Check for multiple matrix positions assigned to same key (#20039)

Bumps [actions/stale](https://github.com/actions/stale) from 7 to 8.
- [Release notes](https://github.com/actions/stale/releases)
- [Changelog](https://github.com/actions/stale/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/stale/compare/v7...v8)

---
updated-dependencies:
- dependency-name: actions/stale
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/stale.yml

@@ -13,7 +13,7 @@ jobs:
   stale:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/stale@v7
+      - uses: actions/stale@v8
         with:
           repo-token: ${{ secrets.GITHUB_TOKEN }}
 

docs/feature_pointing_device.md

@@ -22,11 +22,11 @@ POINTING_DEVICE_DRIVER = adns5050
 
 The ADNS 5050 sensor uses a serial type protocol for communication, and requires an additional light source.
 
-| Setting             | Description                                                        | Default                    |
-| ------------------- | ------------------------------------------------------------------ | -------------------------- |
-| `ADNS5050_SCLK_PIN` | (Required) The pin connected to the clock pin of the sensor.       | `POINTING_DEVICE_SCLK_PIN` |
-| `ADNS5050_SDIO_PIN` | (Required) The pin connected to the data pin of the sensor.        | `POINTING_DEVICE_SDIO_PIN` |
-| `ADNS5050_CS_PIN`   | (Required) The pin connected to the Chip Select pin of the sensor. | `POINTING_DEVICE_CS_PIN`   |
+| Setting (`config.h`) | Description                                                        | Default                    |
+| -------------------- | ------------------------------------------------------------------ | -------------------------- |
+| `ADNS5050_SCLK_PIN`  | (Required) The pin connected to the clock pin of the sensor.       | `POINTING_DEVICE_SCLK_PIN` |
+| `ADNS5050_SDIO_PIN`  | (Required) The pin connected to the data pin of the sensor.        | `POINTING_DEVICE_SDIO_PIN` |
+| `ADNS5050_CS_PIN`    | (Required) The pin connected to the Chip Select pin of the sensor. | `POINTING_DEVICE_CS_PIN`   |
 
 
 
@@ -42,7 +42,7 @@ POINTING_DEVICE_DRIVER = adns9800
 
 The ADNS 9800 is an SPI driven optical sensor, that uses laser output for surface tracking.
 
-| Setting                 | Description                                                            | Default                  |
+| Setting (`config.h`)    | Description                                                            | Default                  |
 | ----------------------- | ---------------------------------------------------------------------- | ------------------------ |
 | `ADNS9800_CLOCK_SPEED`  | (Optional) Sets the clock speed that the sensor runs at.               | `2000000`                |
 | `ADNS9800_SPI_LSBFIRST` | (Optional) Sets the Least/Most Significant Byte First setting for SPI. | `false`                  |
@@ -63,7 +63,7 @@ POINTING_DEVICE_DRIVER = analog_joystick
 
 The Analog Joystick is an analog (ADC) driven sensor.  There are a variety of joysticks that you can use for this.
 
-| Setting                           | Description                                                                | Default       |
+| Setting (`config.h`)              | Description                                                                | Default       |
 | --------------------------------- | -------------------------------------------------------------------------- | ------------- |
 | `ANALOG_JOYSTICK_X_AXIS_PIN`      | (Required) The pin used for the vertical/X axis.                           | _not defined_ |
 | `ANALOG_JOYSTICK_Y_AXIS_PIN`      | (Required) The pin used for the horizontal/Y axis.                         | _not defined_ |
@@ -153,7 +153,7 @@ Additionally, `POINTING_DEVICE_GESTURES_CURSOR_GLIDE_ENABLE` is supported in thi
 
 #### Relative mode gestures
 
-| Gesture Setting                        | Description                                                                                                                                                                               | Default       |
+| Gesture Setting (`config.h`)           | Description                                                                                                                                                                               | Default       |
 | -------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------- |
 | `CIRQUE_PINNACLE_TAP_ENABLE`           | (Optional) Enable tap to "left click". Works on both sides of a split keyboard.                                                                                                           | _not defined_ |
 | `CIRQUE_PINNACLE_SECONDARY_TAP_ENABLE` | (Optional) Tap in upper right corner (half of the finger needs to be outside of the trackpad) of the trackpad will result in "right click". `CIRQUE_PINNACLE_TAP_ENABLE` must be enabled. | _not defined_ |
@@ -172,10 +172,10 @@ POINTING_DEVICE_DRIVER = paw3204
 
 The paw 3204 sensor uses a serial type protocol for communication, and requires an additional light source. 
 
-| Setting            | Description                                                    | Default                    |
-| ------------------ |--------------------------------------------------------------- | -------------------------- |
-| `PAW3204_SCLK_PIN` | (Required) The pin connected to the clock pin of the sensor.   | `POINTING_DEVICE_SCLK_PIN` |
-| `PAW3204_SDIO_PIN` | (Required) The pin connected to the data pin of the sensor.    | `POINTING_DEVICE_SDIO_PIN` |
+| Setting (`config.h`) | Description                                                    | Default                    |
+| -------------------- |--------------------------------------------------------------- | -------------------------- |
+| `PAW3204_SCLK_PIN`   | (Required) The pin connected to the clock pin of the sensor.   | `POINTING_DEVICE_SCLK_PIN` |
+| `PAW3204_SDIO_PIN`   | (Required) The pin connected to the data pin of the sensor.    | `POINTING_DEVICE_SDIO_PIN` |
 
 The CPI range is 400-1600, with supported values of (400, 500, 600, 800, 1000, 1200 and 1600).  Defaults to 1000 CPI.
 
@@ -189,7 +189,7 @@ POINTING_DEVICE_DRIVER = pimoroni_trackball
 
 The Pimoroni Trackball module is a I2C based breakout board with an RGB enable trackball. 
 
-| Setting                              | Description                                                                        | Default |
+| Setting (`config.h`)                 | Description                                                                        | Default |
 | ------------------------------------ | ---------------------------------------------------------------------------------- | ------- |
 | `PIMORONI_TRACKBALL_ADDRESS`         | (Required) Sets the I2C Address for the Pimoroni Trackball.                        | `0x0A`  |
 | `PIMORONI_TRACKBALL_TIMEOUT`         | (Optional) The timeout for i2c communication with the trackball in milliseconds.   | `100`   |
@@ -220,7 +220,7 @@ The CPI range is 50-16000, in increments of 50. Defaults to 2000 CPI.
 Both PMW 3360 and PMW 3389 are SPI driven optical sensors, that use a built in IR LED for surface tracking.
 If you have different CS wiring on each half you can use `PMW33XX_CS_PIN_RIGHT` or `PMW33XX_CS_PINS_RIGHT` in combination with `PMW33XX_CS_PIN` or `PMW33XX_CS_PINS` to configure both sides independently. If `_RIGHT` values aren't provided, they default to be the same as the left ones.
 
-| Setting                      | Description                                                                                 | Default                  |
+| Setting (`config.h`)         | Description                                                                                 | Default                  |
 | ---------------------------- | ------------------------------------------------------------------------------------------- | ------------------------ |
 | `PMW33XX_CS_PIN`             | (Required) Sets the Chip Select pin connected to the sensor.                                | `POINTING_DEVICE_CS_PIN` |
 | `PMW33XX_CS_PINS`            | (Alternative) Sets the Chip Select pins connected to multiple sensors.                      | `{PMW33XX_CS_PIN}`       |

lib/python/qmk/c_parse.py

@@ -90,8 +90,10 @@ def find_layouts(file):
                     cli.log.error('Invalid LAYOUT macro in %s: Empty parameter name in macro %s at pos %s.', file, macro_name, i)
                 elif key['label'] not in matrix_locations:
                     cli.log.error('Invalid LAYOUT macro in %s: Key %s in macro %s has no matrix position!', file, key['label'], macro_name)
+                elif len(matrix_locations.get(key['label'])) > 1:
+                    cli.log.error('Invalid LAYOUT macro in %s: Key %s in macro %s has multiple matrix positions (%s)', file, key['label'], macro_name, ', '.join(str(x) for x in matrix_locations[key['label']]))
                 else:
-                    key['matrix'] = matrix_locations[key['label']]
+                    key['matrix'] = matrix_locations[key['label']][0]
 
             parsed_layouts[macro_name] = {
                 'layout': parsed_layout,
@@ -186,7 +188,9 @@ def _parse_matrix_locations(matrix, file, macro_name):
         row = row.replace('{', '').replace('}', '')
         for col_num, identifier in enumerate(row.split(',')):
             if identifier != 'KC_NO':
-                matrix_locations[identifier] = [row_num, col_num]
+                if identifier not in matrix_locations:
+                    matrix_locations[identifier] = []
+                matrix_locations[identifier].append([row_num, col_num])
 
     return matrix_locations