README.EXT, README.EXT.ja: mention about PRIsVALUE [ci skip]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48253 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 8 insertions, 6 deletions

diff --git a/README.EXT b/README.EXT
index 49de246ec0..c8aafc4d55 100644
--- a/README.EXT
+++ b/README.EXT
@@ -203,9 +203,10 @@ rb_vsprintf(const char *format, va_list ap) ::
 
   Creates a new Ruby string with printf(3) format.
 
-  Note: In the format string, %i is used for Object#to_s (or Object#inspect if
-  '+' flag is set) output (and related argument must be a VALUE).  For integers
-  in format strings, use %d.
+  Note: In the format string, "%"PRIsVALUE can be used for Object#to_s
+  (or Object#inspect if '+' flag is set) output (and related argument
+  must be a VALUE).  Since it conflicts with "%i", for integers in
+  format strings, use "%d".
 
 rb_str_cat(VALUE str, const char *ptr, long len) ::
 
@@ -1443,9 +1444,10 @@ void rb_bug(const char *fmt, ...) ::
   called under the situation caused by the bug in the interpreter.  No
   exception handling nor ensure execution will be done.
 
-Note: In the format string, %i is used for Object#to_s (or Object#inspect if
-'+' flag is set) output (and related argument must be a VALUE).  For integers
-in format strings, use %d.
+Note: In the format string, "%"PRIsVALUE can be used for Object#to_s
+(or Object#inspect if '+' flag is set) output (and related argument
+must be a VALUE).  Since it conflicts with "%i", for integers in
+format strings, use "%d".
 
 == Initialize and Start the Interpreter