X-Git-Url: https://diplodocus.org/git/nmh/blobdiff_plain/ca5ae3e652ed0fb43efaabd697162fd1c28d09ba..9322ba2854211794c27fae9468768b80b767c211:/uip/pick.c

diff --git a/uip/pick.c b/uip/pick.c
index d29799b7..801716fe 100644
--- a/uip/pick.c
+++ b/uip/pick.c
@@ -13,6 +13,7 @@
 #include <h/utils.h>
 
 #define PICK_SWITCHES \
+    X("reverse", 0, REVSW) \
     X("and", 0, ANDSW) \
     X("or", 0, ORSW) \
     X("not", 0, NOTSW) \
@@ -65,8 +66,10 @@ main (int argc, char **argv)
     struct msgs_array msgs = { 0, 0, NULL };
     struct msgnum_array nums = { 0, 0, NULL };
     struct msgs *mp, *mp2;
-    register FILE *fp;
+    FILE *fp;
     int debug = 0;
+    int reverse = 0;
+    int start, end, inc;
 
     if (nmh_init(argv[0], 1)) { return 1; }
 
@@ -104,6 +107,10 @@ main (int argc, char **argv)
 		listsw = 0;	/* HACK */
 		done (0);
 
+            case REVSW:
+                reverse = 1;
+                continue;
+
 	    case CCSW: 
 	    case DATESW: 
 	    case FROMSW: 
@@ -231,13 +238,22 @@ main (int argc, char **argv)
      * match.  If there is NOT a match, then add it to a list to
      * remove from the final sequence (it will make sense later)
      */
-    for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
+    if (!reverse) { /* Overflow or underflow is fine. */
+        start = mp->lowsel;
+        end = mp->hghsel + 1;
+        inc = 1;
+    } else {
+        start = mp->hghsel;
+        end = mp->lowsel - 1;
+        inc = -1;
+    }
+    for (msgnum = start; msgnum != end; msgnum += inc) {
 	if (is_selected (mp, msgnum)) {
 	    if ((fp = fopen (cp = m_name (msgnum), "r")) == NULL)
 		admonish (cp, "unable to read message");
 	    if (fp && pmatches (fp, msgnum, 0L, 0L, debug)) {
 		if (listsw)
-		    printf ("%s\n", m_name (msgnum));
+		    puts(m_name (msgnum));
 	    } else {
 	    	app_msgnum(&nums, msgnum);
 	    }
@@ -308,6 +324,6 @@ static void
 putzero_done (int status)
 {
     if (listsw && status && !isatty (fileno (stdout)))
-	printf ("0\n");
+	puts("0");
     exit (status);
 }