Looks like a better approach will be to revert this change: https://www.mercurial-scm.org/repo/hg/rev/7c54917b31f6. I did that in favor of pycompat.open() and now I think it's better to revert that change.
There seems to have been no activities on this Diff for the past 3 Months.
By policy, we are automatically moving it out of the need-review state.
Please, move it back to need-review without hesitation if this diff should still be discussed.