* strftime.c (STRFTIME): should add padding for %[xXrR] etc.

[ruby-dev:37185] fix: #792

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@20357 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Wed Nov 26 00:26:30 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
+
+	* strftime.c (STRFTIME): should add padding for %[xXrR] etc.
+	  [ruby-dev:37185] fix: #792
+
 Tue Nov 25 16:26:12 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
 
 	* array.c (rb_ary_times): taint (and untrust) status should be

strftime.c

@@ -295,7 +295,12 @@ rb_strftime(char *s, size_t maxsize, const char *format, const struct tm *timept
 		do { \
 			i = strftime(s, endp - s, fmt, tm); \
 			if (!i) return 0; \
-			s += i; \
+			if (precision > i) {\
+				memmove(s + precision - i, s, i);\
+				memset(s, padding ? padding : ' ', precision - i); \
+				s += precision;	\
+	                }\
+			else s += i; \
 		} while (0)
 
 		if (*format != '%') {