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Grammar hygiene: remove two redundant parse paths (ambiguity reduction) #7

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Merged
christiankissig merged 2 commits into from
Jun 2, 2026
Merged

Grammar hygiene: remove two redundant parse paths (ambiguity reduction) #7

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21a027f
Reduce ambiguity: drop the duplicate context path in the theory rule
christiankissig Jun 2, 2026
9e8ecc8
Reduce ambiguity: drop the redundant terminal `by` in proof_prove
christiankissig Jun 2, 2026
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4 changes: 1 addition & 3 deletions isabelle_parser/thy_grammar.lark
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Original file line number Diff line number Diff line change
Expand Up @@ -1594,7 +1594,6 @@ context: ( print_locale
| print_state )*

theory: ( goal proof_prove
| context
| statement
| class_instance proof_prove
| derive )*
Expand Down Expand Up @@ -2338,8 +2337,7 @@ proof_prove: ( show
| with proof_chain )* ( terminal_proof_steps
| qed
| "oops"
| "done"
| by)? doc_block?
| "done")? doc_block?

# QUOTED_STRING only found in AFP, not in Isabelle/Isar grammar
conclusion: "shows" stmt
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