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  1. Minecraft: Java Edition
  2. MC-122717

Command success messages for some commands include unaffected entities, unlike command result

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    • Icon: Bug Bug
    • Resolution: Unresolved
    • None
    • Minecraft 17w48a, Minecraft 17w49a, Minecraft 17w49b, Minecraft 17w50a, Minecraft 18w01a, Minecraft 18w06a, Minecraft 18w08b, Minecraft 18w11a, Minecraft 18w16a, Minecraft 18w19b, Minecraft 1.13-pre1, Minecraft 1.13-pre2, Minecraft 1.13-pre5, Minecraft 1.13-pre9, Minecraft 1.13, Minecraft 18w30a, Minecraft 18w44a, Minecraft 19w02a, Minecraft 19w08a, Minecraft 19w11b, Minecraft 1.14.3, 1.14.4, 19w40a, 19w46b, 20w07a, 20w17a, 1.18.2, 1.19.2, 22w42a, 1.20.6, 24w18a, 24w40a
    • Confirmed
    • Commands

      The bug

      When a command affects multiple entities, it's often the case that the command fails for some entities and succeeds for others. For example, adding a tag to some entities that already have it and others that don't. The command result usually reflects how many entities were successfully affected, but the command feedback message often includes all entities, even unaffected ones.

      Affected commands

      Each of these commands behaves similarly:

      • result is the number of affected entities.
      • If none were affected, an error is shown.
      • If any were affected, the success message includes the total number of entities found by the selector, not just the affected ones.
      • The "single success" message only appears if the selector only found one entity; it does not appear when it found multiple but only one was affected.
      Command An entity is unaffected if...
      /tag ... add It has too many tags, or already has the tag
      /tag ... remove It doesn't have the tag
      /scoreboard players enable The trigger is already enabled for that player
      /recipe give The player already knows the recipe
      /recipe take The player doesn't know the recipe
      /playsound The player is "too far away"
      /enchant It's not a mob/player
      It's not holding anything
      It's holding an incompatible item
      It's holding an item with incompatible enchantments
      /effect give It's not a mob/player
      It's immune to the effect
      It has a stronger effect already
      /effect clear ... It's not a mob/player
      It doesn't have the effect
      /effect clear It's not a mob/player
      It doesn't have any effects
      /clear ... No matching items were found
      /advancement grant The player already has the advancement
      /advancement revoke The player doesn't have the advancement
      /advancement grant ... only ... The player already has the criterion
      /advancement revoke ... only ... The player doesn't have the criterion

      /advancement poses a unique challenge. The result is simply the number of changes applied to any player, meaning the many-to-many scenario currently does not know (A) how many advancements found were changed on at least one player, and (B) how many players found had at least one advancement changed. Those are the two numbers that should in theory appear in the feedback message.

      /recipe and /clear also currently only keep track of a running total for their result. They need to also keep track of how many players were affected to appear in the feedback message.

      For all other commands, simply substituting the existing result into the feedback message would resolve the issue.

      How to reproduce

      /tag @e[sort=nearest,limit=5] add test
/tag @e[sort=nearest,limit=6] add test

      Expected result
      Added tag 'test' to 5 entities
      Added tag 'test' to (some specific entity)

      Observed result
      Added tag 'test' to 5 entities
      Added tag 'test' to 6 entities

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            Unassigned Unassigned
            tryashtar [Mod] tryashtar
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              Created:
              Updated:
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