From 4f9bebddec5cccb3a0664ef088a59eb587d17315 Mon Sep 17 00:00:00 2001
From: Benno Schulenberg <bensberg@telfort.nl>
Date: Fri, 10 Apr 2020 12:56:41 +0200
Subject: [PATCH] syntax: email: rename file and syntax, away from the mistaken
 'mutt'

Also, colorize lines that are multiply quoted, and email addresses,
and URLs.
---
 syntax/Makefile.am  |  2 +-
 syntax/email.nanorc | 17 +++++++++++++++++
 syntax/mutt.nanorc  |  9 ---------
 3 files changed, 18 insertions(+), 10 deletions(-)
 create mode 100644 syntax/email.nanorc
 delete mode 100644 syntax/mutt.nanorc

diff --git a/syntax/Makefile.am b/syntax/Makefile.am
index 4140dee0..d0bd851f 100644
--- a/syntax/Makefile.am
+++ b/syntax/Makefile.am
@@ -8,6 +8,7 @@ pkgdata_DATA =	asm.nanorc \
 		debian.nanorc \
 		default.nanorc \
 		elisp.nanorc \
+		email.nanorc \
 		fortran.nanorc \
 		gentoo.nanorc \
 		go.nanorc \
@@ -21,7 +22,6 @@ pkgdata_DATA =	asm.nanorc \
 		makefile.nanorc \
 		man.nanorc \
 		mgp.nanorc \
-		mutt.nanorc \
 		nanohelp.nanorc \
 		nanorc.nanorc \
 		nftables.nanorc \
diff --git a/syntax/email.nanorc b/syntax/email.nanorc
new file mode 100644
index 00000000..6818d2ff
--- /dev/null
+++ b/syntax/email.nanorc
@@ -0,0 +1,17 @@
+## Syntax highlighting for emails.
+
+syntax email "\.eml$"
+
+# Quoted lines.
+color green "^>.*"
+color cyan "^> ?>.*"
+color yellow "^> ?> ?>.*"
+
+# Email addresses.
+color brightmagenta "<[^@]+@[^@]+>"
+
+# URLs.
+color brightblue "(https?|ftp)://\S+\.\S+[^\s.)]"
+
+# Signatures, even quoted ones.
+color yellow start="^>* ?-- $" end="^>* ?$"
diff --git a/syntax/mutt.nanorc b/syntax/mutt.nanorc
deleted file mode 100644
index 97cfcd1e..00000000
--- a/syntax/mutt.nanorc
+++ /dev/null
@@ -1,9 +0,0 @@
-## Here is an example for quoted emails (under e.g. mutt).
-
-syntax mutt
-
-# Quoted lines.
-color green "^>.*"
-
-# Signatures, even quoted ones.
-color yellow start="^>* ?-- $" end="^>* ?$"