AUTO_BED_LEVELING_3POINT manual probe positions ignored

[nick9one1]

Marlin.zip

Bug Description

When using AUTO_BED_LEVELING_3POINT and setting the XY in

/**
 * Points to probe for all 3-point Leveling procedures.
 * Override if the automatically selected points are inadequate.
 */

manual probe positions are ignored.

the standard 3 point probe positions cause the furthest Y coordinate to probe off the back of my bed.

G1 X15 Y125 is as far back as I can go.

when the manaual probe position is set to

/**
 * Points to probe for all 3-point Leveling procedures.
 * Override if the automatically selected points are inadequate.
 */
#if EITHER(AUTO_BED_LEVELING_3POINT, AUTO_BED_LEVELING_UBL)
  //#define PROBE_PT_1_X 15
  #define PROBE_PT_1_Y 125
  //#define PROBE_PT_2_X 15
  //#define PROBE_PT_2_Y 20
  //#define PROBE_PT_3_X 170
  //#define PROBE_PT_3_Y 20
  #endif

G29 ignores #define PROBE_PT_1_Y 125 and still probes at Y180

Marlin.zip

[SwiftingSpeed]

The conditional check needs all three points to be defined fully (both X and Y), you can't define part of them.
https://github.com/MarlinFirmware/Marlin/blob/36bab2b30e11817377bde66650a1404d574b16a4/Marlin/src/inc/Conditionals_post.h#L1995

[thinkyhead]

Now patched with a better sanity check.

[github-actions]

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