Subject: 28.0.50; decode-coding-string fails EOL conversion of ASCII string

From: Kazuhiro Ito <[email-masked]>
Date: Thu, 09 Apr 2020 17:26:05 +0900

Since commit 4ed39549e3f9dbfeb2aea0e2674a7701dbc0e5ea (Avoid expensive
recoding for ASCII identity cases (bug#40407)), below code returns
unexpected result.

(let ((string "ABCD\x0d\nEFG")
      inhibit-eol-conversion)
  (decode-coding-string string 'raw-text-dos))

-> "ABCD^M
EFG"

expected result is 
-> "ABCD
EFG"

It seems that the committed code does not take care of EOL conversion.

-- 
Kazuhiro Ito