src/HOL/Lambda/ROOT.ML

make sure short theorem names are preferred to composite ones in Sledgehammer;
this code used to work at some point

Syntax.ambiguity_level := 100;
Proofterm.proofs := 2;

no_document use_thys ["Code_Integer"];
use_thys ["Eta", "StrongNorm", "Standardization", "WeakNorm"];