copies-rust: pre-indent some code to clarify the next changeset
The next changeset will massively rewrite the next function. However having a
clear diff on the core semantic of the function will help making the next
changesets clearer. So we do most of the churn beforehand.
Differential Revision: https://phab.mercurial-scm.org/D9301
[tool.black]
line-length = 80
exclude = '''
build/
| wheelhouse/
| dist/
| packages/
| \.hg/
| \.mypy_cache/
| \.venv/
| mercurial/thirdparty/
'''
skip-string-normalization = true
quiet = true