src/gn/starlark/rustfmt-nightly.toml

# This enables unstable features *for the formatter*.
# It does not do so for the compiler.
unstable_features = true

# Automatically group imports into distinct, standard sections
group_imports = "StdExternalCrate"
# Merge imports from the same crate into a single nested block
imports_granularity = "Crate"

# Bring macros into the formatting pipeline
format_macro_matchers = true
format_macro_bodies = true

# Logical grouping inside impl blocks
reorder_impl_items = true

# Tidier visual layouts
normalize_comments = true

# Stable formatter features.
# LINT.IfChange

# Automatically wrap comments and documentation at the line limit
wrap_comments = true

# Ensure match blocks have trailing commas for cleaner git diffs
match_block_trailing_comma = true

# LINT.ThenChange(//src/gn/starlark/rustfmt.toml)