maddr: add -d to only print display name.

maddr.c

@@ -9,6 +9,7 @@
 #include "blaze822.h"
 
 static int aflag;
+static int dflag;
 static char defaulthflags[] = "from:sender:reply-to:to:cc:bcc:"
     "resent-from:resent-sender:resent-to:resent-cc:resent-bcc:";
 static char *hflag = defaulthflags;
@@ -63,15 +64,22 @@ addr(char *file)
 			while ((v = blaze822_addr(v, &disp, &addr))) {
 				if (disp && addr && strcmp(disp, addr) == 0)
 					disp = 0;
-				if (disp && addr) {
-					if (aflag) {
+
+				if (aflag) {
+					if (addr)
 						printf("%s\n", addr);
-					} else {
+				} else if (dflag) {
+					if (disp) {
+						print_quoted(disp);
+						printf("\n");
+					}
+				} else {
+					if (disp && addr) {
 						print_quoted(disp);
 						printf(" <%s>\n", addr);
+					} else if (addr) {
+						printf("%s\n", addr);
 					}
-				} else if (addr) {
-					printf("%s\n", addr);
 				}
 			}
 		}
@@ -89,13 +97,14 @@ int
 main(int argc, char *argv[])
 {
 	int c;
-	while ((c = getopt(argc, argv, "ah:")) != -1)
+	while ((c = getopt(argc, argv, "adh:")) != -1)
 		switch (c) {
 		case 'a': aflag = 1; break;
+		case 'd': dflag = 1; break;
 		case 'h': hflag = optarg; break;
 		default:
 			fprintf(stderr,
-			    "Usage: maddr [-a] [-h headers] [msgs...]\n");
+			    "Usage: maddr [-ad] [-h headers] [msgs...]\n");
 			exit(1);
 		}
 

man/maddr.1

@@ -1,4 +1,4 @@
-.Dd July 22, 2016
+.Dd March 30, 2020
 .Dt MADDR 1
 .Os
 .Sh NAME
@@ -6,7 +6,7 @@
 .Nd extract mail addresses from messages
 .Sh SYNOPSIS
 .Nm
-.Op Fl a
+.Op Fl ad
 .Op Fl h Ar headers
 .Op Ar msgs\ ...
 .Sh DESCRIPTION
@@ -36,6 +36,8 @@ The options are as follows:
 .Bl -tag -width Ds
 .It Fl a
 Only print the addr-spec address, not the display name.
+.It Fl d
+Only print the display name.
 .It Fl h Ar headers
 Only search the colon-separated list of
 .Ar headers