How to use other encoding of env file that is different from os encoding?

[yzqdev]

My OS is windows, and its encoding is GBK. when I use startlette's config module to read a file .env whose encoding is utf-8,it says,

UnicodeDecodeError: 'gbk' codec can't decode byte 0xab in position 614: illegal multibyte sequence

.
and i found the following code,with open(file_name) as input_file,without a encoding.
https://github.com/encode/starlette/blob/9450edf28208ba139c2162b38e6ea40eb04bc90b/starlette/config.py#L116-L119

so what can i do to solve the problem that use my gbk windows to read a utf-8 env file?

[seaskydl]

This should be a bug

[Kludex]

Seems like a bug yep. PR welcome.

[secrett2633]

Fix PR : #2996

[injae-kim]

Fix PR: #2992 👍