Module patch 

Structs

FileSnapshot

One file as it was before a patch touched it, with a fingerprint of what the patch left behind so a later restore can tell whether anything else has changed the file since.

PatchFileSummary

PatchSummary

Enums

FileChange

Functions

affected_paths

apply_patch

apply_patch_with_snapshots

snapshot_max_bytes caps how much of a file’s previous contents is kept for undo; anything larger is recorded as unrestorable instead of truncated, since a partial restore would corrupt the file.

coalesce_snapshots

Collapses a rewind range into one entry per path, describing the whole range rather than each patch in it.

content_hash

Cheap content fingerprint. Only ever compared against another fingerprint this program produced, so a non-cryptographic hash is enough.