racket / racket/drracket

check-syntax only draws an arrow when an additional definition is present in unit

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check-syntax
Dominant language
Racket
Stars
516
Forks
103
PR merge metrics
No merged PRs in 30d

Description

#lang racket

(unit
  (import)
  (export)
  (define x 1)
  (define y 2)
  x)

Draws the arrows I expect, but in

#lang racket

(unit
  (import)
  (export)
  (define x 1)
  x)

check-syntax reports no bound occurences of x. Even though the expansion has a disappeared-binding property for x.

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Research direction

Reproduce the two unit examples in DrRacket and compare the check-syntax arrows with the expansion's disappeared-binding property for x. Trace the check-syntax handling of a unit containing one versus multiple definitions; done means the single-definition example reports the bound occurrence of x and draws the expected arrow.

Written by the indexing model from the issue text.

Assessment

Domain
devtools
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
45/100

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