mty fmt¶

Format .mty files in place, or format from standard input.

Synopsis¶

mty fmt [OPTIONS] [PATHS]...

Name	Description
`PATHS`	Files or directories to format. Directories are walked recursively for `*.mty`. Ignored when `--stdin` is set.

Flag	Purpose
`--stdin`	Read source from stdin, write formatted output to stdout.
`--check`	Do not modify files. Exit non-zero if any file would be reformatted.
`-h`, `--help`	Print help.

For each file, parses the source, runs the formatter, and writes the result back if it differs.
Lossless: the formatter operates over the rowan CST, so trivia (comments, whitespace) is preserved.
In slice 1 the formatter is an identity pass — see the internals page. It still reads, parses, and re-emits the file, so a file with a parse error will silently round-trip its broken text.

Code	Meaning
`0`	nothing to do, or all files formatted successfully
`1`	`--check` ran and one or more files would be reformatted; or an I/O error

Format a single file in place:

mty fmt src/main.mty

Format every .mty file under src/:

mty fmt src/

Use as a pre-commit gate:

mty fmt --check src/

Pipe through stdin:

cat src/main.mty | mty fmt --stdin