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fix: don't render all branches of choice nodes #8

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merged 1 commit into from
Mar 21, 2024
Merged

fix: don't render all branches of choice nodes #8

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7 changes: 7 additions & 0 deletions src/highlighting/SubVerso/Highlighting/Code.lean
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Original file line number Diff line number Diff line change
Expand Up @@ -592,6 +592,13 @@ partial def highlight' (ids : HashMap Lsp.RefIdent Lsp.RefIdent) (trees : Persis
| _, _ =>
highlight' ids trees dot
highlight' ids trees name
| .node _ `choice alts =>
-- Arbitrarily select one of the alternatives found by the parser. Otherwise, quotations of
-- let-bindings with antiquotations as the bound variable leads to doubled bound variables,
-- because the parser emits a choice node in the quotation. And it's never correct to show
-- both alternatives!
if h : alts.size > 0 then
highlight' ids trees alts[0]
| stx@(.node _ k children) =>
let pos := stx.getPos?
for child in children do
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