grep outputs "binary file matches" for non UTF-8 encoding text files in RHEL 8 or later

Issue

• Non UTF-8 encoding (such as SJIS) text files are treated as binary files by grep in RHEL 8 or later.

• RHEL 8 grep detect some files as binary files For example, /etc/udev/hwdb.bin which were treated as text files in RHEL 7 grep.

  $ grep LANG /etc/udev/hwdb.bin
  grep: /etc/udev/hwdb.bin: binary file matches