On Fri, Aug 02, 2024 at 12:21:43PM +0200, Sven M. Hallberg wrote:
> NB: Calling date() twice in puthead() seems wrong and is useless anyway,
> since it never returns NULL.
> 

Solved:

Index: extern.h
===================================================================
RCS file: /cvs/src/usr.bin/mail/extern.h,v
diff -u -p -r1.30 extern.h
--- extern.h	21 May 2024 05:00:48 -0000	1.30
+++ extern.h	2 Aug 2024 15:06:36 -0000
@@ -100,6 +100,7 @@ int	 collabort(void);
 void	 commands(void);
 int	 copycmd(void *);
 int	 count(struct name *);
+size_t	 date(char *str);
 int	 deletecmd(void *);
 int	 delm(int *);
 int	 deltype(void *);
Index: send.c
===================================================================
RCS file: /cvs/src/usr.bin/mail/send.c,v
diff -u -p -r1.26 send.c
--- send.c	8 Mar 2023 04:43:11 -0000	1.26
+++ send.c	2 Aug 2024 15:06:36 -0000
@@ -516,15 +516,22 @@ puthead(struct header *hp, FILE *fo, int
 {
 	int gotcha;
 	char *from;
+	char time[32];
 
 	gotcha = 0;
 	from = hp->h_from ? hp->h_from : value("from");
+	if (date(time) > 0 && fo != stdout)
+		fprintf(fo, "Date: %s\n", time), gotcha++;
 	if (from != NULL)
 		fprintf(fo, "From: %s\n", from), gotcha++;
 	if (hp->h_to != NULL && w & GTO)
 		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 (fo != stdout) {
+		fprintf(fo, "User-Agent: OpenBSD mail(1)\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)
Index: util.c
===================================================================
RCS file: /cvs/src/usr.bin/mail/util.c,v
diff -u -p -r1.2 util.c
--- util.c	26 Dec 2022 19:16:01 -0000	1.2
+++ util.c	2 Aug 2024 15:06:36 -0000
@@ -641,3 +641,20 @@ clearnew(void)
 		}
 	}
 }
+
+size_t
+date(char *str)
+{
+	struct tm newtime;
+	time_t ltime;
+	static char buf[32];
+	size_t n;
+	
+	ltime = time(&ltime);
+	localtime_r(&ltime, &newtime);
+	n = strftime(buf, sizeof(buf), "%a, %d %b %Y %T %z", &newtime);
+
+	snprintf(str, sizeof(buf), "%s\n", buf);
+
+	return (n);
+}


-- 
Walter