#patch

Version 0.1.1 behavior is documented here. The support record separates local verification from published MoonX behavior; moonx examples use registry releases.

Apply a checked unified or context diff:

moonx cli/diff -u --label old.txt --label new.txt old.txt new.txt | moonx cli/patch --dry-run
moonx cli/patch --dry-run -i change.diff
moonx cli/patch -o - -i change.diff original.txt

Unified (---/+++/@@) and traditional context (***/---/********) patches are parsed into exact hunks. Context lines must match at the declared position. File headers are parsed before writes, and each file's hunks are checked before producing its output. -R reverses additions and removals. -pN strips leading path components, -d changes the base directory, -i selects the patch input, and -o - emits the result to stdout. --dry-run performs the same checks without changing files. -s suppresses routine progress; use it with -o - for clean content output. -u/-c require unified/context input and -t accepts the noninteractive profile. -F0 is the only accepted fuzz setting. Without -p, only the basename is retained; unsafe traversal paths after stripping are rejected.

Creating a file from /dev/null and deleting a file to /dev/null are supported when the result is unambiguous. Updating an existing pathname is deliberately rejected before reading the target: an in-place write could modify hard-link aliases, while replacing the inode requires the original file mode, which released MoonBit APIs do not expose. Named -o output is also rejected because upstream copies source permissions to the output. Use --dry-run or -o - for existing files. This is an exact-hunk subset: on a mismatch the current file produces no output, no .rej file is created, and later file patches continue. Binary, mode, rename, fuzz, offset, and interactive patches are not implemented. Errors return 2 for a malformed or unsupported request and 1 for a hunk mismatch. --help prints usage and --version prints the command and package version.

#Standalone metadata

Standalone --version prints exactly patch 0.1.1 followed by one newline. Standalone --help starts with Usage: patch, lists both metadata options, and ends with a newline. Both write to stdout, leave stdin unread, and exit with status 0. Exact-version publication and verification remain recorded separately in the support record.

Change

source

type Change

FilePatch

source

type FilePatch

Hunk

source

type Hunk

Line

source

type Line derive(Eq, @moonbitlang/core/debug.Debug
Debug)

Source Files

Site source Report issue Packages Build queue Skills Statistics

patch

#patch

#Standalone metadata

#Change

#FilePatch

#Hunk

#Line

Source Files

Change

FilePatch

Hunk

Line