Don't call fmt::Write::write_str for statically empty strings
#40701
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This means that `writeln!(something, "{}{}", s1, s2)` no longer calls
`write_str` two times with empty strings (before each substitution).
See rust-lang#31966 for an earlier attempt.
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r? @brson (rust_highfive has picked a reviewer for you, use r? to override) |
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It's not this easy. |
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This means that
writeln!(something, "{}{}", s1, s2)no longer callswrite_strtwo times with empty strings (before each substitution).See #31966 for an earlier attempt.