#xxd for moonx

Observed Wasm profile (2026-09-03): this README is supplementary. The support record is the only capability authority; it lists the repeatable moon run --target wasm --release results and exclusions. Options mentioned here but not promoted in that record are not compatibility guarantees.

Make a hex dump, or reverse one back into bytes:

printf 'hello' | moonx cli/xxd
moonx cli/xxd -p data.bin            # plain continuous hex
moonx cli/xxd -r dump.txt > out.bin  # reverse a dump
printf '68690a' | moonx cli/xxd -r -p

Options: -p plain hex, -r/--revert reverse (with or without -p), -i include-style C output, -c N bytes per line (default 16, or 30 with -p), -l N stop after N bytes, and -s N seek before a forward dump. Include output accepts -n NAME for the C symbol; addressed reverse dumps validate offsets and preserve sparse holes up to a bounded output size. Non-dump text follows Vim xxd's loose offset scan and is otherwise ignored; the same allocation bound applies. Negative/end-relative seeks remain explicitly rejected.

With no file operand, the command silently reads stdin until EOF, matching the upstream terminal, pipe, redirection, and explicit - behavior.

Source Files

main.mbt

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