Search results

Import failed, environment already contains <code>sparseCasesOn_2</code>

bugSomething isn't workingSomething isn't working

Status: Open.

#12825 In leanprover/lean4;

· TwoFX opened on Mar 6, 2026

Panic at <code>replayConsts</code> when replaying inductive types

bugSomething isn't workingSomething isn't working

Status: Open.

#12820 In leanprover/lean4;

· JLimperg opened on Mar 5, 2026

<code>Environment.replay</code> does not support nested inductive types

bugSomething isn't workingSomething isn't working

Status: Open.

#12819 In leanprover/lean4;

· JLimperg opened on Mar 5, 2026

<code>induction</code> tactic swallows IDE diagnostics

bugSomething isn't workingSomething isn't working

Status: Open.

#12815 In leanprover/lean4;

· TwoFX opened on Mar 5, 2026

Verso docstring on <code>where</code> declaration with match causes error

bugSomething isn't workingSomething isn't working

Status: Open.

#12813 In leanprover/lean4;

· Vierkantor opened on Mar 5, 2026

<code>grind</code> and <code>simp +arith</code> cause deep recursion involving negative integer literal

bugSomething isn't workingSomething isn't working

Status: Open.

#12812 In leanprover/lean4;

· datokrat opened on Mar 5, 2026

Theorems proved by well-founded recursion are confusingly marked @[irreducible]

Status: Open.

#12804 In leanprover/lean4;

· nomeata opened on Mar 5, 2026

Improve error message when rfl-proved theorem fails module system defeq check

Status: Open.

#12803 In leanprover/lean4;

· nomeata opened on Mar 5, 2026

TreeMap all/any characterization theorems

Status: Open.

#12798 In leanprover/lean4;

· digama0 opened on Mar 4, 2026

It warns about <code>sorry</code>, where there is no <code>sorry</code>

bugSomething isn't workingSomething isn't working

Status: Open.

#12797 In leanprover/lean4;

· vporton opened on Mar 4, 2026

parser interprets unindented list literal as part of indented tactic block

bugSomething isn't workingSomething isn't working

Status: Open.

#12794 In leanprover/lean4;

· datokrat opened on Mar 4, 2026

RFC: Lean.Exception should implement Lean.ToMessageData

RFCRequest for commentsRequest for comments

Status: Open.

#12784 In leanprover/lean4;

· yonatan-reicher opened on Mar 4, 2026