7.7. das-fmt — Code Formatter

das-fmt formats daslang source files in place using daslib/das_source_formatter. It is the formatter behind the MCP format_file tool and the shipped pre-commit hook. Run it as daslang -tool das-fmt, or as das-fmt through the SDK’s bin/das-fmt.exe (see tools — running the SDK’s tools).

Not to be confused with gen1-to-gen2, the gen1→gen2 syntax converter.

7.7.1. Quick start

Format a folder (or a single file):

daslang utils/das-fmt/dasfmt.das -- --path path/to/scripts

Verify without writing (CI mode — exits nonzero on unformatted files):

daslang utils/das-fmt/dasfmt.das -- --path path/to/scripts --verify

Wrap lines longer than 100 columns as well (off by default):

daslang utils/das-fmt/dasfmt.das -- --path path/to/scripts --max-line-length 100

A long line breaks only where a newline cannot end the statement: after =>, or inside ( / [ after (, [, ,, ; or before || / &&. The continuation lines up under the open bracket. Groups shorter than 40 columns are not split, lines with a comment are not touched, and a line that cannot be made to fit stays as it is.

Other flags: --exclude-mask <mask> (skip paths containing the mask, repeatable), --t <n> (thread cap), --verbose, --color / --no-color.