rustfmt.toml

########################################################
# Basic Configuration
########################################################

# Because `merge_imports` is deprecated, use this instead:
imports_granularity = "Crate"

# Keep imports sorted
reorder_imports = true

# Group standard-library vs. external crate imports
group_imports = "StdExternalCrate"

# Reorder mod statements 
reorder_modules = true

# Force Unix line endings
newline_style = "Unix"

# The target maximum width of a line
max_width = 100

# Indentation style: "Visual" can give a more column-like alignment
indent_style = "Visual"

########################################################
# Alignment & Layout
########################################################

# Align struct fields if the longest field name is <= threshold
# Increase beyond 20 if you want deeper alignment.
struct_field_align_threshold = 20

# Enum discriminant alignment is often unstable, but if your rustfmt
# version supports it and doesn't warn, set it:
enum_discrim_align_threshold = 20

# Layout for function parameters: "Tall" (default), "Compressed", or "Vertical".
# "Vertical" is somewhat more “columnar” if you have multiple parameters.
fn_params_layout = "Vertical"

# No stable option for controlling function call alignment beyond
# `fn_call_width` + `indent_style = "Visual"`
# so let’s set fn_call_width to a smaller threshold, forcing wrapping:
fn_call_width = 60

########################################################
# Comments & Code Blocks
########################################################

# Wrap comments (including doc comments) at max_width
wrap_comments = true

# Attempt to format code blocks in doc comments
format_code_in_doc_comments = true

########################################################
# Other Tweaks
########################################################

# Use shorthand field initialization (Foo { x, y }).
use_field_init_shorthand = true

# If you want to reorder impl items (unstable):
# reorder_impl_items = true

# You can also normalize block comment style:
normalize_comments = true
normalize_doc_attributes = true

# Additional string formatting at line breaks
format_strings = true