updated for version 7.4b.006

Problem:    Using \{n,m} in an autocommand pattern no longer works.
            Specifically, mutt temp files are not recognized. (Gary Johnson)
Solution:   Make \\\{n,m\} work.

runtime/doc/autocmd.txt

@@ -961,6 +961,9 @@ The pattern is interpreted like mostly used in file names:
 	\,	matches a ','
 	{ }	like \( \) in a |pattern|
 	,	inside { }: like \| in a |pattern|
+	\}	literal }
+	\{	literal {
+	\\\{n,m\}  like \{n,m} in a |pattern|
 	\	special meaning like in a |pattern|
 	[ch]	matches 'c' or 'h'
 	[^ch]   match any character but 'c' and 'h'

src/fileio.c

@@ -10327,7 +10327,7 @@ file_pat_to_reg_pat(pat, pat_end, allow_dirs, no_bslash)
 		 * Don't unescape \, * and others that are also special in a
 		 * regexp.
 		 * An escaped { must be unescaped since we use magic not
-		 * verymagic.
+		 * verymagic.  Use "\\\{n,m\}"" to get "\{n,m}".
 		 */
 		if (*++p == '?'
 #ifdef BACKSLASH_IN_FILENAME
@@ -10337,8 +10337,14 @@ file_pat_to_reg_pat(pat, pat_end, allow_dirs, no_bslash)
 		    reg_pat[i++] = '?';
 		else
 		    if (*p == ',' || *p == '%' || *p == '#'
-						    || *p == ' ' || *p == '{')
+				       || *p == ' ' || *p == '{' || *p == '}')
 			reg_pat[i++] = *p;
+		    else if (*p == '\\' && p[1] == '\\' && p[2] == '{')
+		    {
+			reg_pat[i++] = '\\';
+			reg_pat[i++] = '{';
+			p += 2;
+		    }
 		    else
 		    {
 			if (allow_dirs != NULL && vim_ispathsep(*p)

src/version.c

@@ -727,6 +727,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    6,
 /**/
     5,
 /**/