feat(transfer): wire --debug=FUZZY producer emissions (3.4.1 parity)#4109
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Adds byte-for-byte FUZZY debug emissions matching upstream rsync's generator.c: - FUZZY,1 "fuzzy basis selected for <target>: <basis>" at the receiver basis search site whenever the fuzzy matcher returns a candidate. - FUZZY,2 "fuzzy distance for <candidate> = <score>.<frac>" per scored candidate inside FuzzyMatcher::find_fuzzy_basis search loop. - FUZZY,2 "fuzzy size/modtime match for <candidate>" helper exported for future wiring sites. Includes per-emission shape tests and a receiver-side integration test confirming the FUZZY,1 line fires through find_basis_file_with_config under --debug=FUZZY. Refs #2185.
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…4109) * feat(transfer): wire --debug=FUZZY producer emissions (3.4.1 parity) Adds byte-for-byte FUZZY debug emissions matching upstream rsync's generator.c: - FUZZY,1 "fuzzy basis selected for <target>: <basis>" at the receiver basis search site whenever the fuzzy matcher returns a candidate. - FUZZY,2 "fuzzy distance for <candidate> = <score>.<frac>" per scored candidate inside FuzzyMatcher::find_fuzzy_basis search loop. - FUZZY,2 "fuzzy size/modtime match for <candidate>" helper exported for future wiring sites. Includes per-emission shape tests and a receiver-side integration test confirming the FUZZY,1 line fires through find_basis_file_with_config under --debug=FUZZY. Refs #2185. * style: cargo fmt
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May 18, 2026
…4109) * feat(transfer): wire --debug=FUZZY producer emissions (3.4.1 parity) Adds byte-for-byte FUZZY debug emissions matching upstream rsync's generator.c: - FUZZY,1 "fuzzy basis selected for <target>: <basis>" at the receiver basis search site whenever the fuzzy matcher returns a candidate. - FUZZY,2 "fuzzy distance for <candidate> = <score>.<frac>" per scored candidate inside FuzzyMatcher::find_fuzzy_basis search loop. - FUZZY,2 "fuzzy size/modtime match for <candidate>" helper exported for future wiring sites. Includes per-emission shape tests and a receiver-side integration test confirming the FUZZY,1 line fires through find_basis_file_with_config under --debug=FUZZY. Refs #2185. * style: cargo fmt
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Summary
--debug=FUZZYflag to actual producer emissions matching upstream rsync 3.4.1'sgenerator.cbyte-for-byte."fuzzy basis selected for <target>: <basis>"headline at FUZZY,1 inside the receiver basis search wheneverFuzzyMatcherreturns a candidate."fuzzy distance for <name> = <score>.00000"line at FUZZY,2 inside the directory scan, plus an exportedtrace_fuzzy_size_mtime_matchhelper ready for the size+mtime fast path.Test plan
crates/matching/src/fuzzy/trace.rs.fuzzy_basis_selection_emits_debug_fuzzy_linedrivesfind_basis_file_with_configunder FUZZY=1 and asserts the upstream-format selection line lands on the diagnostic bus.Closes #2185