An assertion tab crashes if the assertion proof contains errors

expln / metamath-lamp

Metamath-lamp (Lite Assistant for Metamath Proofs) is a GUI-based proof assistant for creating formal mathematical proofs in Metamath that does not require installation (just run it directly using your web browser).

https://expln.github.io/lamp/latest/index.html

MIT License

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An assertion tab crashes if the assertion proof contains errors #184

Open expln opened 7 months ago

expln commented 7 months ago

Steps to reproduce:

Create a theorem with a valid compressed proof.
Rename one of the labels inside the proof so it doesn't refer to any existing assertion or essential.
Open the tab with this theorem proof - mm-lamp will crash.