* sprintf.c (rb_str_format): fix for left justify flag.

* sprintf.c (rb_str_format): zero-precision zero bug revised.
  [ruby-dev:33419]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@15281 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,10 @@
+Sun Jan 27 23:33:35 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* sprintf.c (rb_str_format): fix for left justify flag.
+
+	* sprintf.c (rb_str_format): zero-precision zero bug revised.
+	  [ruby-dev:33419]
+
 Sun Jan 27 23:20:54 2008  Tanaka Akira  <akr@fsij.org>
 
 	* include/ruby/oniguruma.h: precise mbclen API redesigned to avoid

sprintf.c

@@ -699,12 +699,15 @@ rb_str_format(int argc, const VALUE *argv, VALUE fmt)
 		if (prefix) {
 		    width -= strlen(prefix);
 		}
-		if ((flags&(FZERO|FPREC)) == FZERO) {
+		if ((flags & (FZERO|FMINUS|FPREC)) == FZERO) {
 		    prec = width;
 		    width = 0;
 		}
 		else {
-		    if (prec < len) prec = len;
+		    if (prec < len) {
+			if ((flags & FPREC) && len == 1 && *s == '0') len = 0;
+			else prec = len;
+		    }
 		    width -= prec;
 		}
 		if (!(flags&FMINUS)) {
@@ -726,7 +729,7 @@ rb_str_format(int argc, const VALUE *argv, VALUE fmt)
 			buf[blen++] = c;
 		    }
 		}
-		else {
+		else if ((flags & (FMINUS|FPREC)) != FMINUS) {
 		    char c;
 
 		    if (!sign && bignum && !RBIGNUM_SIGN(val))