On some inputs containing long lines, rustfmt makes no changes, either to those lines or any other imports. Using shorter identifiers fixes the problem.

To Reproduce

Run rustup run nightly rustfmt --verbose --config imports_granularity=Crate --emit stdout on this input file:

use foo::bar;
use foo::{quuz, baz};
use abaadfsasdfdsfdfas::aasdffjsioejr::abc::sdsdf::sdfsdfsdf::sdfsdfdsf::{
    asdfasdefasdasdfsdfdfasdf::asdfasdasedfafasdfasdf,
};

The input file will be returned unchanged.

Expected behavior

Delete the final s from the initial abaadfsasdfdsfdfas and the correct behavior is seen; the output is

use abaadfsasdfdsfdfa::aasdffjsioejr::abc::sdsdf::sdfsdfsdf::sdfsdfdsf::asdfasdefasdasdfsdfdfasdf::asdfasdasedfafasdfasdf;
use foo::{bar, baz, quuz};

I can reproduce the same behavior with merge_imports=true on stable.

Meta

• rustfmt version: rustup run nightly rustfmt --version returns rustfmt 1.4.36-nightly (7de6968 2021-02-07).
• From where did you install rustfmt?: rustup
• How do you run rustfmt: rustfmt