From 46b10837480b71900a9d3d10913f4b293f800554 Mon Sep 17 00:00:00 2001
From: David Levine <levinedl@acm.org>
Date: Tue, 13 May 2014 07:02:11 -0500
Subject: [PATCH] Added --dereference option, if supported, to file(1) command
 in NMH_MIMETYPEPROC and NMH_MIMEENCODINGPROC macros.

---
 m4/mimetype.m4 | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/m4/mimetype.m4 b/m4/mimetype.m4
index 30796866..56886a53 100644
--- a/m4/mimetype.m4
+++ b/m4/mimetype.m4
@@ -11,7 +11,10 @@ AC_DEFUN([NMH_MIMETYPEPROC],
 [AC_CACHE_CHECK([for a program to provide a MIME type string],
 		[nmh_cv_mimetype_proc],
   [nmh_cv_mimetype_proc=
-   for mprog in 'file --brief --mime-type' 'file --mime-type'
+   for mprog in 'file --brief --dereference --mime-type' \
+                'file --dereference --mime-type' \
+                'file --brief --mime-type' \
+                'file --mime-type'
    do
      AS_IF([$mprog "${srcdir}/configure" > /dev/null 2>&1],
 	   [nmh_cv_mimetype_proc="$mprog"; break])
@@ -27,7 +30,10 @@ AC_DEFUN([NMH_MIMEENCODINGPROC],
 [AC_CACHE_CHECK([for a program to provide a MIME encoding string],
 		[nmh_cv_mimeencoding_proc],
   [nmh_cv_mimeencoding_proc=
-   for mprog in 'file --brief --mime-encoding' 'file --mime-encoding'
+   for mprog in 'file --brief --dereference --mime-encoding' \
+                'file --dereference --mime-encoding' \
+                'file --brief --mime-encoding' \
+                'file --mime-encoding'
    do
      AS_IF([$mprog "${srcdir}/DATE" > /dev/null 2>&1],
 		AS_CASE([`$mprog "${srcdir}/DATE"`],
-- 
2.56.0