No Space After #

Spaces after the # symbol in maps or records should be avoided.

Quick fix

Use an Erlang code formatter that enforces strict spacing.

Avoid

BadMap = #   {this => map, has => spaces, af_ter => pound}.
BadRecord =     #      this_record{has = spaces, af_ter = pound}.

Prefer

GoodMap = #{this => map, has => no_spaces, af_ter => pound}.
GoodRecord = #this_record{has = no_spaces, af_ter = pound}

Rationale

The # symbol is used for both records (#record{}) and maps (#{}).

While adding a space after # is not syntactically incorrect, it introduces visual ambiguity and reduces code readability. Inconsistent formatting can make it harder to distinguish between records, maps, and general usage, especially in larger codebases. Enforcing no space after # promotes consistency, improves clarity, and avoids potential confusion during code reviews or maintenance.

Options

• None

Example configuration

{elvis_style, no_space_after_pound, #{}}