From 23de972209f154c32890ca1700d7a047cdeda4dd Mon Sep 17 00:00:00 2001
From: Hsieh Chin Fan <pham@topo.tw>
Date: Sat, 12 Nov 2022 00:12:51 +0800
Subject: Add message filter

---
 mutt/message_filter.sh | 15 +++++++++++++++
 mutt/muttrc.topo       |  1 +
 2 files changed, 16 insertions(+)
 create mode 100755 mutt/message_filter.sh

diff --git a/mutt/message_filter.sh b/mutt/message_filter.sh
new file mode 100755
index 0000000..2b4db0e
--- /dev/null
+++ b/mutt/message_filter.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+cd $(dirname $0)
+
+MESSAGE=$(cat)
+
+NEWALIAS=$(echo "${MESSAGE}" | grep ^"From: " | sed s/[\,\"\']//g | awk '{$1=""; if (NF == 3) {print "alias" $0;} else if (NF == 2) {print "alias" $0 $0;} else if (NF > 3) {print "alias", tolower($(NF-1))"-"tolower($2) $0;}}')
+
+if grep -Fxq "$NEWALIAS" alias.topo; then
+    :
+else
+    echo "$NEWALIAS" >> alias.topo
+fi
+
+echo "${MESSAGE}"
diff --git a/mutt/muttrc.topo b/mutt/muttrc.topo
index a95825d..5c2a9b9 100644
--- a/mutt/muttrc.topo
+++ b/mutt/muttrc.topo
@@ -17,6 +17,7 @@ set pgp_timeout = 300
 set pgp_sign_as = 6DD8C14A # replace 6DD8C14A with your gpg key id
 
 # Tune contacts
+set display_filter = ~/.config/mutt/message_filter.sh
 source ~/.config/mutt/alias.topo
 source ~/.config/mutt/hooks.topo
 
-- 
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