From a19484406c1cd545ff09dd1007350a7c87a523b2 Mon Sep 17 00:00:00 2001
From: Joey Schulze <joey@infodrom.org>
Date: Tue, 7 Feb 2006 18:27:06 +0000
Subject: [PATCH] Corrected handling of long header fields in compliance to
 section 2.2.3 of RFC 2822

---
 mbox.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/mbox.c b/mbox.c
index 6385b92..0fc2491 100644
--- a/mbox.c
+++ b/mbox.c
@@ -37,6 +37,7 @@ struct mail {
 
 #define HDR_LEN	128
 #define TAB	0x09
+#define LWSP	0x20
 
 /*
  * Like strncpy() but with terminated result.
@@ -182,7 +183,9 @@ int inspect_mbox(char *path, char *prefix, off_t size, int opt_flags)
 
       if (inheader && !feof(f)) {
 	lookahead = fgetc(f);
-	if (lookahead == TAB) {
+	if (lookahead == TAB || lookahead == LWSP) {
+	  if (buf[strlen(buf)-1] != LWSP)
+	    strncat (buf, " ", sizeof(buf)-strlen(buf)-1);
 	  if ((cp = fgets(tmp, sizeof(tmp), f)) != NULL) {
 	    strncat (buf, tmp, sizeof(buf)-strlen(buf)-1);
 	    if (strlen(buf) > 0 && buf[strlen(buf)-1] == '\n')
-- 
2.20.1