BC Observatoryunofficial, made by waldo
code change · fixAL Developmentofficial - Microsoftreviewed - checked by Opus

#138 knowledge(style): event subscribers bind by parameter name, so a shorter list is not a mismatch

The style guide for event subscribers is clarified to document the actual behavior that AL binds subscribers by parameter name rather than position, allowing subscribers to omit parameters and reorder them without it being a mismatch.

Open in Claude138.mdPull request #138

Pull request · merged into main on 2026-08-28 by gggdttt · 1 file (+8 -4), 1 AL · fix · tier official · reviewed (checked by Opus)

What changed

  • AL binds event subscribers to publishers by parameter name, not by position
  • Subscribers can omit any parameters they don’t use from any position
  • Subscriber parameters can be declared in a different order than the publisher
  • The style guide is updated to prevent false positives from flagging valid shorter parameter lists
  • Evidence from real BCApps code shows 11 subscribers with reordering or non-prefix subsets that currently ship

AL objects touched

  • microsoft/knowledge/style/event-subscriber-param-names-match-publisher.md: modified, not in the BC? snapshot

Context

  • Systems: development

Source: metadata of a merged pull request in microsoft/BCQuality (bcquality): title, labels, changed paths and counts, with a summary in our words. No source text and no description beyond one short quote (D10, D61).