Do not insert spaces around braces with empty body or multiple lines
@@ -493,11 +493,18 @@ fn delim_token_to_str(
delim_token: &DelimToken,
shape: Shape,
use_multiple_lines: bool,
+ inner_is_empty: bool,
) -> (String, String) {
let (lhs, rhs) = match *delim_token {
DelimToken::Paren => ("(", ")"),
DelimToken::Bracket => ("[", "]"),
- DelimToken::Brace => ("{ ", " }"),
+ DelimToken::Brace => {
+ if inner_is_empty || use_multiple_lines {
+ ("{", "}")
+ } else {
+ ("{ ", " }")
+ }
+ }
DelimToken::NoDelim => ("", ""),
};
if use_multiple_lines {
@@ -553,13 +560,13 @@ impl MacroArgKind {
use_multiple_lines: bool,
) -> Option<String> {
let rewrite_delimited_inner = |delim_tok, args| -> Option<(String, String, String)> {
- let (lhs, rhs) = delim_token_to_str(context, delim_tok, shape, false);
let inner = wrap_macro_args(context, args, shape)?;
+ let (lhs, rhs) = delim_token_to_str(context, delim_tok, shape, false, inner.is_empty());
if lhs.len() + inner.len() + rhs.len() <= shape.width {
return Some((lhs, inner, rhs));
}
- let (lhs, rhs) = delim_token_to_str(context, delim_tok, shape, true);
+ let (lhs, rhs) = delim_token_to_str(context, delim_tok, shape, true, false);
let nested_shape = shape
.block_indent(context.config.tab_spaces())
.with_max_width(context.config);
