report and trees already checked every stdout write and the final
flush. run now takes the stdout it hands to them, so tests pass a
closed file or a failing writer instead of swapping os.Stdout: a
closed stdout exits 1 with a one-line diagnostic, and the writer's
error reaches the caller.
README "Error handling" now states the two cases that never reach
sfdupes as a failed write: a pipe reader that exits early ends the
process with SIGPIPE, as with cat; and stdout closed with >&- is
replaced by /dev/null by the Go runtime before main runs, so the run
succeeds.
Model: opus-5-5
A path holding a tab or newline split a row of the report or trees
output. The path columns of both now write a backslash, tab, newline
and carriage return as \\, \t, \n and \r; every other byte is written
unchanged. Grouping and sorting still use the stored path. Warnings
on stderr are escaped the same way in warnf, so each stays one line.
In trees, the root directory's node now has the path "/" instead of
an empty string, and its children's paths start with a single slash.
README states the rule under "Report output format".
Model: opus-5-5
A file of 10 MiB or more now gets only its 64 KiB head and tail in the
hash phase, so its content is read only when it can be a duplicate. A
new content phase after the update phase finds every group of records,
anywhere in the database, that share size, head and tail and include
one without a content hash. It checks every member with lstat and, when
at least two pass, reads those without a content hash through the
existing worker pool; a stale file does not count as a match. report
and trees leave out records without a content hash. The README, help
text and TODO entry describe the gate; the schema stays at version 1.
Lint suppressed: gosec on the file open in hashContentOnly, as in
hashSignature, and on one chmod in a test.
Model: opus-5-5
scan now synchronizes a database that survives between runs
(SFDUPES_DATABASE, default /var/lib/sfdupes/db.sqlite) instead of
emitting a stream: operands are resolved to absolute paths, unchanged
files (same size, mtime not newer than recorded) are never re-read, new
and changed files are hashed, and records under the scanned operands
that were not verified this run are deleted; records outside the
operands are untouched. All changes commit in a single transaction, and
WAL journaling with a busy timeout keeps a report run during a cron
scan safe.
report and trees read the database (no positional arguments); the
NUL-terminated stream format, its parser, and the malformed-record
handling are gone. The driver is modernc.org/sqlite (pure Go), so
builds keep cgo disabled.
clawbot
sneak