This PR reverts #12 and applies a correct fix for #12 (comment).

The Bash bundled with Git for Windows removes trailing \r from value in variable assignment:

• https://github.com/msys2/MSYS2-packages/blob/8e4ba7001ea2e9f81550c01fa3149daef6502cf8/bash/0005-bash-4.3-msys2-fix-lineendings.patch#L17-L41

This patch results in the following different behavior which makes the comparison that tries to detect null\r always fail:

• Original Bash:

  $ bash --version
  GNU bash, version 5.3.9(1)-release (x86_64-pc-linux-gnu)
  Copyright (C) 2025 Free Software Foundation, Inc.
  License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
  
  This is free software; you are free to change and redistribute it.
  There is NO WARRANTY, to the extent permitted by law.
  
  $ foobar=$(printf '%s' $'foo\rbar')
  $ echo "${#foobar}"
  7

• MSYS2 Bash:

  $ bash --version
  GNU bash, version 5.2.37(1)-release (x86_64-pc-msys)
  Copyright (C) 2022 Free Software Foundation, Inc.
  License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
  
  This is free software; you are free to change and redistribute it.
  There is NO WARRANTY, to the extent permitted by law.
  
  $ foobar=$(printf '%s' $'foo\rbar')
  $ echo "${#foobar}"
  6

In order to correctly detect this case, I rewrote that part without variable assignment on MSYS2 Bash:

$ jq --version
jq-1.8.1

$ jq -r .a <<<'{}' | wc -c
6

$ jq -b -r .a <<<'{}' | wc -c
5