mutt: Add %R (number of read messages) for $status_format.

[Brendan Cully]

changeset: 7179:c5e1f0c241d1
user:      Vincent Lefevre <vinc...@vinc17.net>
date:      Sat Nov 11 18:59:31 2017 +0100
link:      http://dev.mutt.org/hg/mutt/rev/c5e1f0c241d1
Add %R (number of read messages) for $status_format.

diffs (45 lines):

diff -r fbf01f1c87a3 -r c5e1f0c241d1 init.h
--- a/init.h    Fri Nov 10 13:06:43 2017 -0800
+++ b/init.h    Sat Nov 11 18:59:31 2017 +0100
@@ -3560,6 +3560,7 @@
   ** .dt %P  .dd percentage of the way through the index
   ** .dt %r  .dd modified/read-only/won't-write/attach-message indicator,
   **             according to $$status_chars
+  ** .dt %R  .dd number of read messages *
   ** .dt %s  .dd current sorting mode ($$sort)
   ** .dt %S  .dd current aux sorting method ($$sort_aux)
   ** .dt %t  .dd number of tagged messages *
diff -r fbf01f1c87a3 -r c5e1f0c241d1 status.c
--- a/status.c  Fri Nov 10 13:06:43 2017 -0800
+++ b/status.c  Sat Nov 11 18:59:31 2017 +0100
@@ -55,6 +55,7 @@
  * %p = number of postponed messages [option]
  * %P = percent of way through index
  * %r = readonly/wontwrite/changed flag
+ * %R = number of read messages [option]
  * %s = current sorting method ($sort)
  * %S = current aux sorting method ($sort_aux)
  * %t = # of tagged messages [option]
@@ -236,7 +237,21 @@
         snprintf (buf, buflen, "%s", StChars->chars[i]);
       break;
     }
-      
+
+    case 'R':
+    {
+      int read = Context ? Context->msgcount - Context->unread : 0;
+
+      if (!optional)
+      {
+       snprintf (fmt, sizeof (fmt), "%%%sd", prefix);
+       snprintf (buf, buflen, fmt, read);
+      }
+      else if (!read)
+       optional = 0;
+      break;
+    }
+
     case 's':
       snprintf (fmt, sizeof (fmt), "%%%ss", prefix);
       snprintf (buf, buflen, fmt,