report and trees now connect read-only (mode=ro, query_only, the same
busy timeout) and no longer set the journal mode, which is a write. A
read-only connection to a WAL database still needs its -wal and -shm
files, or write access to the directory to create them, so scan now
switches the database back to rollback-journal mode whenever it closes
it: between scans the file alone holds the database. If a report has
the database open at that moment the switch is refused; scan warns and
the database stays in WAL mode, with its -wal and -shm files, until the
next scan. README §Database states what readers need.
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
.dockerignore now sends .git, without .git/config, which can hold a
credential. The build stage takes the VERSION build argument when one
is given, otherwise git describe --tags --always of that .git, and
fails if the context carries .git and still yields no version. A plain
docker build . used to stamp dev. The CI checkout fetches full history
so CI sees the tag and stamps the same value as make build.
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
sfdupes is pre-1.0, with no installed base and no databases anywhere,
so the schema is changed in place and its version stays 1.
schemaVersion goes back to 1; the six-column files table, content
included, is the version 1 schema. The check that stops on a database
with any other version stays. README.md and TODO.md no longer describe
a version 2 or rejecting and rescanning version 1 databases. The
main.go package comment still described 1024-byte end windows and said
full file contents are never read; it now describes the hashes the
code computes.
Model: opus-5-5
files.dat was the scan format before the SQLite database; nothing has
produced it since. Drop the stale references from the Makefile clean
target, .gitignore and .dockerignore. make clean still removes the
binary and .gitignore still covers the database files. The only
remaining mention is the historical entry in TODO.md.
Model: opus-4-8 (implementation); fable-5-1 (merge)
clawbot