leanprover / leanprover/vscode-lean4

Popups for huge expressions are shown outside of viewport

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Dominant language
TypeScript
Stars
313
Forks
104
Avg merge
1h 56m
Merged PRs (30d)
1

Description

def N : Nat := Nat.add 37 50

example : N ≠ N := by
  simp (config := {decide := false}) only [N, Nat.add]
  /- Put cursor on `≠` in infoview -/
  sorry

When highlighting a subterm that is multiple pages long, the popup gets shown at the beginning of the subterm, which is outside of the viewport.

image

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Research direction

Reproduce the issue using the Lean example and the infoview cursor placement described in the report. Inspect the popup positioning entry point in the VS Code extension, then verify that highlighting a multi-page subterm keeps the popup within the visible viewport.

Written by the indexing model from the issue text.

Assessment

Tech stack
typescript
Domain
frontend
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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