#zcat

Version 0.1.2 behavior is documented here. The support record tracks platform verification and exact-version publication evidence separately. The earlier published cli/zcat@0.1.1 retains its recorded profile.

Write the decoded contents of gzip files to stdout, keeping the input files:

moonx cli/zcat first.gz second.gz
cat first.gz | moonx cli/zcat

With no file or with -, read stdin. Operands are processed in order. -c and -d explicitly select the default stdout/decompression behavior; -t validates without output. -n is accepted because stdout output never restores metadata. -1 through -9, --fast and --best are accepted and ignored by decompression and testing.

Concatenated members, optional header fields and CRC/size checks follow the same gzip behavior as gunzip. Input and output stream through 64 KiB buffers, a 32 KiB history window and bounded main/secondary Huffman tables. Invalid or truncated data returns 1, preserving any decoded prefix; trailing garbage returns 2. -q suppresses trailing-garbage warnings, and --help/--version provide command information. The shared encoder uses pure MoonBit 32 KiB LZ history, 3–258 byte matches, 64 KiB chunks and stored/fixed/dynamic cost selection. The G1 frontend GNU cases pass on Native and Wasm; performance acceptance remains pending. See the G1 development report. The G2 report records streaming byte/error checks, direct timings and memory observations.

Only gzip input is accepted. Other compression formats, filename suffix searching, force/pass-through behavior and metadata restoration are not supported.

#Standalone metadata

Standalone --version prints exactly zcat 0.1.2 followed by one newline. Standalone --help starts with Usage: zcat, 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.

Source Files

main.mbt

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