From 35e148b0000e6c657becd05ca1529b34c7ab6a44 Mon Sep 17 00:00:00 2001
From: Thomas Roessler <roessler@does-not-exist.org>
Date: Thu, 19 Nov 1998 23:46:52 +0000
Subject: [PATCH] Properly encode '_' characters in words which are qp-encoded.

---
 rfc2047.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rfc2047.c b/rfc2047.c
index 72ea1fd9..7636cda6 100644
--- a/rfc2047.c
+++ b/rfc2047.c
@@ -69,7 +69,7 @@ static void q_encode_string (char *d, size_t dlen, const unsigned char *s)
       wordlen++;
       dlen--;
     }
-    else if ((*s & 0x80) || *s == '\t' || strchr (MimeSpecials, *s))
+    else if ((*s & 0x80) || *s == '\t' || *s == '_' || strchr (MimeSpecials, *s))
     {
       if (wordlen >= 70)
       {
-- 
2.40.0