Tracking issue: write the style guide

[nrc]

Types and items

• Enums and variants #31 Enums and variants
• Function definitions #39 Function definitions
• Types #15 Types
• Generics declarations #29 Generics declarations
• Where clauses #38 Where clauses
• Single-line where. #74 Single-line where.
• Specify rules for breaking long where conditions. #75 Specify rules for breaking long where conditions.
• trait bounds #80 trait bounds

Expressions and statements

• boolean and arithmetic expressions #18 boolean and arithmetic expressions
• blocks #21 blocks
• match #34 match
• closures #35 closures
• Combining openings and closings #61 Combining openings and closings
• array literals and repeated array initialisers #63 array literals and repeated array initialisers
• struct and tuple literals #64 struct and tuple literals
• function calls #65 function calls
• field and method chains #66 field and method chains

Low hanging fruit

• Comments #17 Comments
• type aliases #32 type aliases
• Disable trailing comma by default #42 Disable trailing comma by default
• Whitespace in associated type syntax #51 Whitespace in associated type syntax
• Should extern "C" include "C" #52 Should extern "C" include "C"
• Convention about empty lines #57 Convention about empty lines
• Ranges #60 Ranges
• Ordering of types of groups within a module #71 Ordering of types of groups within a module
• Attribute / doc comment ordering #72 Attribute / doc comment ordering
• Spaces around = in attributes #82 Spaces around = in attributes

Misc

• Advocacy document motivating automatic formatting #54 Advocacy document motivating automatic formatting
• Fields with reserved names #84 Fields with reserved names

[nrc]

Not quite done, but tracked by all the remaining issues.