From: bors <bors@rust-lang.org>
Date: Sat, 3 Jul 2021 16:06:35 +0000 (+0000)
Subject: Auto merge of #86778 - tmiasko:fast-multiline, r=davidtwco
X-Git-Url: https://git.lizzy.rs/?a=commitdiff_plain;ds=sidebyside;h=96859dbaf6229f131fbd427a32aaa95d4f9cb132;p=rust.git

Auto merge of #86778 - tmiasko:fast-multiline, r=davidtwco

Avoid byte to char position conversions in `is_multiline`

Converting a byte position into a char position is currently linear in
the number of multibyte characters in the source code. Avoid it when
checking if a range spans across lines.

This makes it feasible to compile source files with a large number of
multibyte characters.
---

96859dbaf6229f131fbd427a32aaa95d4f9cb132