* ext/syck/syck.c (syck_new_parser): clear parser on init.

  thanks, ts. [ruby-core:02931]

* ext/syck/token.c (sycklex_yaml_utf8): buffer underflow.
  thanks, ts. [ruby-core:02929]

* lib/yaml/baseemitter.rb (indent_text): simpler flow block code.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@6403 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

2 files changed, 12 insertions, 24 deletions

diff --git a/lib/yaml/baseemitter.rb b/lib/yaml/baseemitter.rb
index da908d98dc..2881d424b4 100644
--- a/lib/yaml/baseemitter.rb
+++ b/lib/yaml/baseemitter.rb
@@ -45,9 +45,13 @@ module YAML
                 else
                     '>'
                 end 
-                if valx =~ /\A[ \t#]/
-                    block += options(:Indent).to_s
+
+                indt = $&.to_i if block =~ /\d+/
+                if valx =~ /(\A[ \t#]|^---\s+)/
+                    indt = options(:Indent) unless indt.to_i > 0
+                    block += indt.to_s
                 end
+
             block +=
                 if valx =~ /\n\Z\n/
                     "+"
@@ -63,8 +67,6 @@ module YAML
 			if block[0] == ?> 
 				valx = fold( valx ) 
 			end
-            indt = nil
-            indt = $&.to_i if block =~ /\d+/
             #p [block, indt]
 			self << block + indent_text( valx, indt ) + "\n"
 		end
@@ -125,25 +127,9 @@ module YAML
 		# Folding paragraphs within a column
 		#
 		def fold( value )
-			value.gsub!( /\A\n+/, '' )
-			folded = $&.to_s
-			width = (0..options(:BestWidth))
-			while not value.empty?
-				last = value.index( /(\n+)/ )
-				chop_s = false
-				if width.include?( last )
-					last += $1.length - 1
-				elsif width.include?( value.length )
-					last = value.length
-				else
-					last = value.rindex( /[ \t]/, options(:BestWidth) )
-					chop_s = true
-				end
-				folded += value.slice!( 0, width.include?( last ) ? last + 1 : options(:BestWidth) )
-				folded.chop! if chop_s
-				folded += "\n" unless value.empty?
-			end
-			folded
+            value.gsub( /(^[ \t]+.*$)|(\S.{0,#{options(:BestWidth) - 1}})(?:[ \t]+|(\n+(?=[ \t]))|$)/ ) do |s| 
+                $1 || $2 + ( $3 || "\n" )
+            end
 		end
 
         #
diff --git a/lib/yaml/rubytypes.rb b/lib/yaml/rubytypes.rb
index 239688a6b2..f73eaf2dcd 100644
--- a/lib/yaml/rubytypes.rb
+++ b/lib/yaml/rubytypes.rb
@@ -392,7 +392,9 @@ class Range
     end
 	def to_yaml( opts = {} )
 		YAML::quick_emit( self.object_id, opts ) { |out|
-            if self.begin.is_complex_yaml? or self.end.is_complex_yaml? or not to_yaml_properties.empty?
+            if self.begin.is_complex_yaml? or self.begin.respond_to? :to_str or
+              self.end.is_complex_yaml? or self.end.respond_to? :to_str or
+              not to_yaml_properties.empty?
                 out.map( to_yaml_type ) { |map|
                     map.add( 'begin', self.begin )
                     map.add( 'end', self.end )