---
 src/apprentice.c |    6 ++++++
 1 file changed, 6 insertions(+)

--- src/apprentice.c
+++ src/apprentice.c	2017-05-24 11:04:53.931691878 +0000
@@ -2358,6 +2358,12 @@ check_format_type(const char *ptr, int t
 			ptr++;
 		if (*ptr == '#')
 			ptr++;
+		if (*ptr == ' ')
+			ptr++;
+		if (*ptr == '+')
+			ptr++;
+		if (*ptr == '\'')
+			ptr++;
 #define CHECKLEN() do { \
 	for (len = cnt = 0; isdigit((unsigned char)*ptr); ptr++, cnt++) \
 		len = len * 10 + (*ptr - '0'); \