* range.c (rb_range_beg_len): returns Qnil only when "beg" points

  outside of a range.  No boundary check for "end".


git-svn-id: http://svn.ruby-lang.org/repos/ruby/branches/ruby_1_8@6692 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Sat Jul 24 13:32:47 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
+
+	* range.c (rb_range_beg_len): returns Qnil only when "beg" points
+	  outside of a range.  No boundary check for "end".
+
 Fri Jul 23 16:40:25 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
 
 	* gc.c (define_final): should not disclose NODE* to Ruby world.

array.c

@@ -620,10 +620,8 @@ rb_ary_subseq(ary, beg, len)
  *  continuing for _length_ elements, or returns a subarray
  *  specified by _range_.
  *  Negative indices count backward from the end of the
- *  array (-1 is the last element). Returns nil if any indices
- *  are out of range unless the index equals the array size and a
- *  _length_ or _range_ parameter is given, in which case an
- *  empty array is returned.
+ *  array (-1 is the last element). Returns nil if the index
+ *  (or starting index) are out of range.
  *
  *     a = [ "a", "b", "c", "d", "e" ]
  *     a[2] +  a[0] + a[1]    #=> "cab"

lib/ping.rb

@@ -49,7 +49,7 @@ def pingecho(host, timeout=5, service="echo")
       end
     rescue Errno::ECONNREFUSED
       return true
-    rescue
+    rescue Timeout::Error
       return false
     end
     return true

range.c

@@ -480,14 +480,12 @@ rb_range_beg_len(range, begp, lenp, len, err)
     }
     if (err == 0 || err == 2) {
 	if (beg > len) goto out_of_range;
-	if (end > len)
-	    end = len;
+	if (end > len) end = len;
     }
     if (end < 0) end += len;
     if (!EXCL(range)) end++;	/* include end point */
-    if (end < 0) goto out_of_range;
     len = end - beg;
-    if (len < 0) goto out_of_range;
+    if (len < 0) len = 0;
 
     *begp = beg;
     *lenp = len;

string.c

@@ -1543,7 +1543,8 @@ rb_str_aref(str, indx)
  *     a[1..3]                #=> "ell"
  *     a[-3,2]                #=> "er"
  *     a[-4..-2]              #=> "her"
- *     a[-2..-4]              #=> nil
+ *     a[12..-1]              #=> nil
+ *     a[-2..-4]              #=> ""
  *     a[/[aeiou](.)\1/]      #=> "ell"
  *     a[/[aeiou](.)\1/, 0]   #=> "ell"
  *     a[/[aeiou](.)\1/, 1]   #=> "l"