[9front] patch Mail(1) to fix attachments

[unobe@cpan.org]

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See attached.

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changeset:   8409:61f3cece9395
branch:      mbp-2011
user:        Romano <unobe@cpan.org>
date:        Sat Apr 17 14:32:37 2021 -0700
files:       sys/src/cmd/upas/Mail/comp.c
description:
Setting the headers breaks e-mail attachments.  Marshal(1) already
sets the proper content-type and content-transfer-encoding based on if
there is a codepoint above 0x7f--if we want to change the default from
Latin-1, that's where the fix should be.  Without this fix, the wrong
content-type and content-transfer-encoding is set for multipart
messages, and therefore 'Include:' or 'Attach:' instructions will send
malformed e-mail.


diff -r f2ec0867a0ae -r 61f3cece9395 sys/src/cmd/upas/Mail/comp.c
--- a/sys/src/cmd/upas/Mail/comp.c	Tue Apr 13 23:29:34 2021 -0700
+++ b/sys/src/cmd/upas/Mail/comp.c	Sat Apr 17 14:32:37 2021 -0700
@@ -67,9 +67,6 @@
 	chanfree(c->sync);
 	close(c->fd[0]);
 
-	/* needed because mail is by default Latin-1 */
-	fprint(c->fd[1], "Content-Type: text/plain; charset=\"UTF-8\"\n");
-	fprint(c->fd[1], "Content-Transfer-Encoding: 8bit\n");
 	buf = emalloc(Bufsz);
 	while((n = read(fd, buf, Bufsz)) > 0)
 		if(write(c->fd[1], buf, n) != n)