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doc: Update rationale #189

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@ -47,12 +47,12 @@ include:
- If a tactic loses track of metavariables, it will not be caught until the end - If a tactic loses track of metavariables, it will not be caught until the end
of the proof search. This is a bug in the tactic itself. of the proof search. This is a bug in the tactic itself.
- Timeouts for executing tactics is not available. Maybe this will change in the - Although a timeout feature exists in Pantograph, it relies on the coöperative
future. multitasking from the tactic implementation. There is nothing preventing a
buggy tactic from stalling Lean if it does not check for cancellation often.
- Interceptions of parsing errors generally cannot be turned into goals (e.g. - Interceptions of parsing errors generally cannot be turned into goals (e.g.
`def mystery : Nat := :=`) due to Lean's parsing system. `def mystery : Nat := :=`) due to Lean's parsing system.
## References ## References
* [Pantograph Paper](https://arxiv.org/abs/2410.16429) * [Pantograph Paper](https://arxiv.org/abs/2410.16429)