fix: mine --dry-run TypeError on files with room=None (#586)#687
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bensig merged 2 commits intoMemPalace:developfrom Apr 12, 2026
Merged
fix: mine --dry-run TypeError on files with room=None (#586)#687bensig merged 2 commits intoMemPalace:developfrom
bensig merged 2 commits intoMemPalace:developfrom
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process_file() returned (0, None) for already-mined, unreadable, and too-short files. In --dry-run mode the caller always enters the room_counts branch, so None ended up as a dict key and crashed the summary printer with "unsupported format string passed to NoneType.__format__". Returning "general" instead of None makes the function contract explicit: it always yields (int, str). This matches the consensus fix discussed in the issue thread.
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Code review + security audit clean.
jphein
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Apr 12, 2026
Upstream merged MemPalace#682-684 (our splits), MemPalace#687 (dry-run None room), MemPalace#695/MemPalace#708 (convo_miner full response), MemPalace#732 (0-chunk re-processing), plus VitePress docs site. Conflicts: - config.py: take upstream's [^\W_] regex (our MemPalace#683 merged version) - miner.py: integrate upstream's early-return for tiny files, dedupe dry-run read path - test_miner.py: keep our detect_room tests + upstream's dry-run test - CONTRIBUTING.md: take upstream's org URL update Co-Authored-By: Claude Opus 4.6 <[email protected]>
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Apr 25, 2026
Port of upstream 091c2fe (PR MemPalace#687, fixes MemPalace#586). The four early-exit paths in process_file() previously returned (0, None). In dry-run mode the caller always enters the room_counts branch, so None landed as a dict key and crashed the summary printer with "unsupported format string passed to NoneType.__format__". Returning "general" makes the function contract explicit: it always yields (int, str). Matches the consensus fix from the upstream issue thread. Updated the existing test_process_file_skips_machine_generated_long_lines assertion accordingly — its previous `assert room is None` was codifying the bug. Upstream: MemPalace@091c2fe Co-authored-by: Mikhail Valentsev <[email protected]> Co-Authored-By: Claude Opus 4.7 (1M context) <[email protected]>
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Closes #586.
mempalace mine --dry-runcrashes with a TypeError in the summary printer whenprocess_file()returns(0, None)for unreadable or too-short files. In real mine mode thedrawers == 0 and not dry_runguard skips these entries before they reachroom_counts, but in dry-run mode the guard does not fire andNoneends up as a dict key. The f-string format{room:20}then raisesTypeError: unsupported format string passed to NoneType.__format__.Fix (2 files, +31/-3):
mempalace/miner.py:return 0, Nonepaths inprocess_file()(already-mined, OSError, below MIN_CHUNK_SIZE) now returnreturn 0, "general"instead. This makes the function contract explicit -- it always returns(int, str).tests/test_miner.py:test_mine_dry_run_with_tiny_file_no_crash-- creates a project with one normal file and one below MIN_CHUNK_SIZE, runsmine()withdry_run=True, verifies no crash.Matches the Option 2 consensus from the issue thread (normalize at the source rather than patching the caller).