rustfmt.toml

# DuetOS rustfmt config.
#
# Style follows idiomatic Rust (K&R braces, default control flow) rather
# than mirroring the C++ Allman house style; rustfmt's Allman support is
# partial and the half-and-half output reads worse than either pure style.
# The width / edition pins below match the C++ side so the column rules
# don't diverge across languages.

edition = "2021"
max_width = 120
tab_spaces = 4
hard_tabs = false
newline_style = "Unix"

# Imports — group by std/extern/local and keep them sorted so the
# existing `use core::{ptr, slice};` shape stays stable.
group_imports = "StdExternalCrate"
reorder_imports = true

# Leave hand-written comments alone — the existing crates have block
# comments documenting invariants we don't want rustfmt rewriting.
normalize_comments = false
wrap_comments = false
format_code_in_doc_comments = false