Hi Ingo,
I did what you suggested me, I investigated a bit and you were right in
that the MIME-Version header was necessary. This new set of patches
add the following headers (hardcoded as you suggested me):
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 8bit
I modified the code the less as possible, just a '-m' option:
$ mail -m -s Hello d...@ext.net < body_message_in_utf8
Although, to tell the truth, I'm not really convinced if this change is
worth it. Feel free to ignore it.
Index: extern.h
===================================================================
RCS file: /cvs/src/usr.bin/mail/extern.h,v
retrieving revision 1.29
diff -u -p -r1.29 extern.h
--- extern.h 16 Sep 2018 02:38:57 -0000 1.29
+++ extern.h 20 Sep 2023 09:55:06 -0000
@@ -261,3 +261,4 @@ int writeback(FILE *);
extern char *__progname;
extern char *tmpdir;
extern const struct cmd *com; /* command we are running */
+extern char mime; /* Add MIME headers */
Index: mail.1
===================================================================
RCS file: /cvs/src/usr.bin/mail/mail.1,v
retrieving revision 1.83
diff -u -p -r1.83 mail.1
--- mail.1 31 Mar 2022 17:27:25 -0000 1.83
+++ mail.1 20 Sep 2023 09:55:06 -0000
@@ -106,6 +106,8 @@ on noisy phone lines.
.It Fl N
Inhibits initial display of message headers
when reading mail or editing a mail folder.
+.It Fl m
+Add MIME headers to send utf-8 encoded messages.
.It Fl n
Inhibits reading
.Pa /etc/mail.rc
Index: main.c
===================================================================
RCS file: /cvs/src/usr.bin/mail/main.c,v
retrieving revision 1.35
diff -u -p -r1.35 main.c
--- main.c 26 Jan 2021 18:21:47 -0000 1.35
+++ main.c 20 Sep 2023 09:55:06 -0000
@@ -79,6 +79,8 @@ int realscreenheight; /* the real scree
int uflag; /* Are we in -u mode? */
sigset_t intset; /* Signal set that is just SIGINT */
+char mime = 0; /* Add MIME headers */
+
/*
* The pointers for the string allocation routines,
* there are NSPACE independent areas.
@@ -136,7 +138,7 @@ main(int argc, char **argv)
smopts = NULL;
fromaddr = NULL;
subject = NULL;
- while ((i = getopt(argc, argv, "EINb:c:dfinr:s:u:v")) != -1) {
+ while ((i = getopt(argc, argv, "EINb:c:dfimnr:s:u:v")) != -1) {
switch (i) {
case 'u':
/*
@@ -171,6 +173,10 @@ main(int argc, char **argv)
*/
subject = optarg;
break;
+ case 'm':
+ /* Add MIME headers */
+ mime = 1;
+ break;
case 'f':
/*
* User is specifying file to "edit" with Mail,
@@ -337,7 +343,7 @@ __dead void
usage(void)
{
- fprintf(stderr, "usage: %s [-dEIinv] [-b list] [-c list] "
+ fprintf(stderr, "usage: %s [-dEIimnv] [-b list] [-c list] "
"[-r from-addr] [-s subject] to-addr ...\n", __progname);
fprintf(stderr, " %s [-dEIiNnv] -f [file]\n", __progname);
fprintf(stderr, " %s [-dEIiNnv] [-u user]\n", __progname);
Index: send.c
===================================================================
RCS file: /cvs/src/usr.bin/mail/send.c,v
retrieving revision 1.26
diff -u -p -r1.26 send.c
--- send.c 8 Mar 2023 04:43:11 -0000 1.26
+++ send.c 20 Sep 2023 09:55:06 -0000
@@ -525,6 +525,8 @@ puthead(struct header *hp, FILE *fo, int
fmt("To:", hp->h_to, fo, w&GCOMMA), gotcha++;
if (hp->h_subject != NULL && w & GSUBJECT)
fprintf(fo, "Subject: %s\n", hp->h_subject), gotcha++;
+ if (mime)
+ fprintf(fo, "MIME-Version: 1.0\nContent-Type: text/plain;
charset=utf-8\nContent-Transfer-Encoding: 8bit\n"), gotcha++;
if (hp->h_cc != NULL && w & GCC)
fmt("Cc:", hp->h_cc, fo, w&GCOMMA), gotcha++;
if (hp->h_bcc != NULL && w & GBCC)
--
Walter
