From 11ab2070d0ec1ca7f9f0fdb4a23367014654efbb Mon Sep 17 00:00:00 2001
From: Erich Eckner <git@eckner.net>
Date: Tue, 31 Jul 2018 08:22:00 +0200
Subject: digest-mailer.in: print summary of all subjects on digest mail

---
 digest-mailer.in | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/digest-mailer.in b/digest-mailer.in
index 43197d6..8d585f7 100644
--- a/digest-mailer.in
+++ b/digest-mailer.in
@@ -176,6 +176,20 @@ fi
     )"
   printf '\n'
   counter=1
+  printf '%s\n' "${to_send}" | \
+    while read -r file; do
+      sed -n '
+        s/^Subject:\s*//
+        T
+        p
+      ' "${file}"
+    done | \
+    sort | \
+    uniq -c | \
+    sort -k1nr,1 -k2,2 | \
+    sed '
+      s/^\s*\([0-9]\+\)\s\+/\1: /
+    '
   printf '%s\n' "${to_send}" | \
     while read -r file; do
       date=$(
-- 
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