Allow mail(1) to look for multiple mail.rc files.

Submitted-By: Lyndon Nerenberg VE7TCP <lyndon@orthanc.com>

usr.bin/mail/mail.1

@@ -30,7 +30,7 @@
 .\" SUCH DAMAGE.
 .\"
 .\"	@(#)mail.1	8.2 (Berkeley) 12/30/93
-.\"	$Id: mail.1,v 1.7 1996/08/29 18:05:57 wosch Exp $
+.\"	$Id: mail.1,v 1.8 1996/10/06 01:55:31 jkh Exp $
 .\"
 .Dd December 30, 1993
 .Dt MAIL 1
@@ -78,9 +78,9 @@ In particular, the
 special
 character when sending mail is only active in interactive mode.
 .It Fl n
-Inhibits reading
-.Pa /etc/mail.rc
-upon startup.
+Inhibits reading the system-wide
+.Pa mail.rc
+files upon startup.
 .It Fl N
 Inhibits the initial display of message headers
 when reading mail or editing a mail folder.
@@ -797,8 +797,9 @@ The binary options include the following:
 Causes messages saved in
 .Ar mbox
 to be appended to the end rather than prepended.
-This should always be set (perhaps in
-.Pa /etc/mail.rc ) .
+This should always be set (preferably in one of the system-wide
+.Pa mail.rc
+files).
 .It Ar ask
 Causes
 .Nm mail
@@ -991,7 +992,7 @@ environment variable is set, it is used as the
 location of the user's mailbox instead of the
 default in /var/mail.
 .Sh FILES
-.Bl -tag -width /usr/share/misc/Mail.help* -compact
+.Bl -tag -width /usr/share/misc/mail.*help -compact
 .It Pa /var/mail/*
 Post office.
 .It ~/mbox
@@ -1000,10 +1001,14 @@ User's old mail.
 File giving initial mail commands.
 .It Pa /tmp/R*
 Temporary files.
-.It Pa /usr/share/misc/mail.help
+.It Pa /usr/share/misc/mail.*help
 Help files.
+.sp
+.It Pa /usr/share/misc/mail.rc
+.It Pa /usr/local/etc/mail.rc
 .It Pa /etc/mail.rc
-System initialization file.
+System-wide initialization files. Each file will be sourced, in order,
+if it exists.
 .El
 .Sh SEE ALSO
 .Xr fmt 1 ,

usr.bin/mail/main.c

@@ -42,6 +42,7 @@ static char sccsid[] = "@(#)main.c	8.1 (Berkeley) 6/6/93";
 #endif /* not lint */
 
 #include "rcv.h"
+#include <err.h>
 #include <fcntl.h>
 #include "extern.h"
 
@@ -207,8 +208,19 @@ Usage: mail [-iInv] [-s subject] [-c cc-addr] [-b bcc-addr] to-addr ...\n\
 	input = stdin;
 	rcvmode = !to;
 	spreserve();
-	if (!nosrc)
-		load(_PATH_MASTER_RC);
+	if (!nosrc) {
+		char *s, *path_rc;
+
+		path_rc = malloc(sizeof(_PATH_MASTER_RC));
+		if (path_rc == NULL) 
+			errx(1, "malloc(path_rc) failed");
+
+		strcpy(path_rc, _PATH_MASTER_RC);
+		while ((s = strsep(&path_rc, ":")) != NULL)
+			if (*s != '\0')
+				load(s);
+	}
+		
 	/*
 	 * Expand returns a savestr, but load only uses the file name
 	 * for fopen, so it's safe to do this.

usr.bin/mail/pathnames.h

@@ -38,5 +38,5 @@
 #define	_PATH_EX	"/usr/bin/ex"
 #define	_PATH_HELP	"/usr/share/misc/mail.help"
 #define	_PATH_TILDE	"/usr/share/misc/mail.tildehelp"
-#define	_PATH_MASTER_RC	"/etc/mail.rc"
+#define	_PATH_MASTER_RC	"/usr/share/misc/mail.rc:/usr/local/etc/mail.rc:/etc/mail.rc"
 #define	_PATH_MORE	"/usr/bin/more"