#grep

Version 0.3.0 behavior is documented here. The support record separates local verification from published MoonX behavior; moonx examples use registry releases.

Search text using basic regular expressions by default, extended expressions with -E, or fixed strings with -F; -G restores basic syntax. Options include -E, -F, -G, -o, -i, -v, -n, -b, -c, -l, -L, -q, -H, -h, -x, -w, -e, -f, and recursive -r. -A/-B/-C emit context with GNU-style selected/context separators, while -z switches input and output records to NUL. Recursive reads accept repeated --include and --exclude basename patterns using portable * and ? wildcards. -R aliases the same traversal as -r; neither follows symbolic links during recursion.

Binary input defaults to GNU 3.12's grep: NAME: binary file matches stderr notice; --binary-files=text (or -a) searches and emits raw records, and --binary-files=without-match skips binary inputs. -s suppresses file-read diagnostics without hiding status 2. Matching, offsets, and record boundaries use a byte-oriented C-locale profile without changing the process environment. Input and output use bounded blocks. Records within a block are views; retained storage grows with a cross-block record and requested context, rather than the entire input. -q and -l stop reading when their result is determined. Binary detection applies as chunks arrive, so text already emitted before a later NUL remains visible. Complete records and a partial final record survive a later input error; the error still produces status 2. -o emits nonempty, nonoverlapping matches using leftmost-longest selection; -b -o reports the offset of each match. No group separator is emitted without context options. BRE/ERE patterns are compiled once by the shared C-byte matcher, including pattern backreferences and directional/ordinary word assertions. Each -e expression retains its own capture numbering. -i folds C-byte literals, classes and backreferences while preserving assertion grammar. Repeated nullable captures follow the tested GNU candidate and capture-register selection, including counted repeats and references. See the workspace support record. Locale-sensitive collation and multibyte case folding are not currently implemented. Exit statuses are 0 for a selected line/file, 1 for no selection, and 2 for an error.

#Standalone metadata

Standalone --version prints exactly grep 0.3.0 followed by one newline. Standalone --help starts with Usage: grep, 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.

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