Bad autocorrect for Style/RedundantStringEscape

[mvz]

The following string is auto-corrected incorrectly by Style/RedundantStringEscape:

"#\{foo\}"

Expected behavior

The second escape is not necessary, but the first one is. So one good correction is:

"#\{foo}"

It seems to be more common to escape the # instead, so an alternative good correction is:

"\#{foo}"

Actual behavior

The string is corrected to the following, which is definitely not correct:

"#{foo}"

Steps to reproduce the problem

• Create a file foo.rb containing

"#\{foo\}"

• Run rubocop -a foo.rb --only Style/RedundantStringEscape.

RuboCop version

$ [bundle exec] rubocop -V
1.37.0 (using Parser 3.1.2.1, rubocop-ast 1.22.0, running on ruby 3.1.2) [x86_64-linux]