emacs-28 ea44d7ddfc: ; * lisp/mail/smtpmail.el (smtpmail-via-smtp): Explain with-case-table.

[Eli Zaretskii]

branch: emacs-28
commit ea44d7ddfc9fe07fbdffd8e02db2ef6bab1f8b5c
Author: Eli Zaretskii <eliz@gnu.org>
Commit: Eli Zaretskii <eliz@gnu.org>

    ; * lisp/mail/smtpmail.el (smtpmail-via-smtp): Explain with-case-table.
---
 lisp/mail/smtpmail.el | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lisp/mail/smtpmail.el b/lisp/mail/smtpmail.el
index 8ac0cd7e7c..33458178a5 100644
--- a/lisp/mail/smtpmail.el
+++ b/lisp/mail/smtpmail.el
@@ -805,7 +805,11 @@ Returns an error if the server cannot be contacted."
                                (plist-get (cdr result) :capabilities)
                                "\r\n")))
                  (let ((name
-                        (with-case-table ascii-case-table ;FIXME: Why?
+                         ;; Use ASCII case-table to prevent I
+                         ;; downcasing to a dotless i under some
+                         ;; language environments.  See
+                         ;; 
https://lists.gnu.org/archive/html/emacs-devel/2007-03/msg01760.html.
+                        (with-case-table ascii-case-table
                           (mapcar (lambda (s) (intern (downcase s)))
                                   (split-string (substring line 4) "[ ]")))))
                    (when (= (length name) 1)