configure.ac: Enable assert(3) by default.

[nmh] / uip / pick.c

diff --git a/uip/pick.c b/uip/pick.c
index a915920808340735600c102e25b58c2c0e5271b1..c502588853439901e449241ab20510b3db10b269 100644 (file)
--- a/uip/pick.c
+++ b/uip/pick.c
@@ -1,6 +1,4 @@
-
-/*
- * pick.c -- search for messages by content
+/* pick.c -- search for messages by content
  *
  * This code is Copyright (c) 2002, 2008, by the authors of nmh.  See the
  * COPYRIGHT file in the root directory of the nmh distribution for
@@ -13,6 +11,7 @@
 #include <h/utils.h>
 
 #define PICK_SWITCHES \
+    X("reverse", 0, REVSW) \
     X("and", 0, ANDSW) \
     X("or", 0, ORSW) \
     X("not", 0, NOTSW) \
@@ -36,6 +35,7 @@
     X("nozero", 0, NZEROSW) \
     X("list", 0, LISTSW) \
     X("nolist", 0, NLISTSW) \
+    X("debug", 0, DEBUGSW) \
     X("version", 0, VERSIONSW) \
     X("help", 0, HELPSW) \
 
@@ -64,15 +64,18 @@ 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;
 
-    done=putzero_done;
+    if (nmh_init(argv[0], 1)) { return 1; }
 
-    setlocale(LC_ALL, "");
-    invo_name = r1bindex (argv[0], '/');
+    done=putzero_done;
 
-    /* read user profile/context */
-    context_read();
+    /* Deprecated.  Use -debug instead. */
+    if ((cp = getenv ("MHPDEBUG")) && *cp)
+       ++debug;
 
     arguments = getarguments (invo_name, argc, argv, 1);
     argp = arguments;
@@ -102,6 +105,10 @@ main (int argc, char **argv)
                listsw = 0;     /* HACK */
                done (0);
 
+            case REVSW:
+                reverse = 1;
+                continue;
+
            case CCSW: 
            case DATESW: 
            case FROMSW: 
@@ -160,6 +167,10 @@ main (int argc, char **argv)
            case NLISTSW: 
                listsw = 0;
                continue;
+
+           case DEBUGSW:
+               ++debug;
+               continue;
            }
        }
        if (*cp == '+' || *cp == '@') {
@@ -225,13 +236,22 @@ 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)) {
+           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);
            }
@@ -302,6 +322,6 @@ static void
 putzero_done (int status)
 {
     if (listsw && status && !isatty (fileno (stdout)))
-       printf ("0\n");
+       puts("0");
     exit (status);
 }