* string.c (rb_str_count): fix wrong single-byte optimization.
	  7bit ascii can be a trailing byte in Shift_JIS.
	  [ruby-dev:48442] [Bug #10078]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@47255 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	string.c: shrink too big buffer

	* string.c (rb_str_resize): shrink the buffer even if new length
  is same but it is enough smaller than the capacity.
	* file.c (expand_path): shrink expanded path which no longer needs
	  rooms to append.  [ruby-core:63114] [Bug #9934]

	* string.c (rb_str_resize): should consider the capacity instead
	  of the old length, as pointed out by nagachika.

	* string.c (rb_str_resize): update capa only when buffer get
	  reallocated.
	  http://d.hatena.ne.jp/nagachika/20140613/ruby_trunk_changes_46413_46420#r46413


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@47215 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	* string.c (rb_str_substr): need to reset code range for shared
	  string too, not only copied string.
	  [ruby-core:62842] [Bug #9882]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@46599 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	* string.c (str_buf_cat): should round up the capacity by 4KiB,
	  but not number of rooms.  [ruby-core:61886] [Bug #9709]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@46187 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	test_m17n.rb: split tests for inspect

	* test/ruby/test_m17n.rb (test_utf_16_32_inspect): split tests for
  each encodings.
	* string.c (get_actual_encoding): get actual encoding according to
	  the BOM if exists.

	* string.c (rb_str_inspect): use according encoding, instead of
	  pseudo encodings, UTF-{16,32}.  [ruby-core:59757] [Bug #8940]

	* string.c (get_encoding): respect BOM on pseudo encodings.
	  [ruby-dev:47895] [Bug #9415]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@45074 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	* string.c (rb_str_modify_expand): enable capacity and disable
	  assocation with packed objects when setting capa, so that
	  pack("p") string fails to unpack properly after modified.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@44819 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

  RB_OBJ_WRITE and RB_OBJ_WRITTEN.
* array.c, class.c, compile.c, hash.c, internal.h, iseq.c,
  proc.c, process.c, re.c, string.c, variable.c, vm.c,
  vm_eval.c, vm_insnhelper.c, vm_insnhelper.h,
  vm_method.c: catch up this change.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44299 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

* parse.y (register_symid_str): use fstrings in symbol table
  [Bug #9171] [ruby-core:58656]
* parse.y (rb_id2str): ditto
* string.c (rb_fstring): create frozen_strings on first usage. this
  allows rb_fstring() calls from the parser (before cString is created)
* string.c (fstring_set_class_i): set klass on fstrings generated
  before cString was defined
* string.c (Init_String): convert frozen_strings table to String
  objects after boot
* ext/-test-/symbol/type.c (bug_sym_id2str): expose rb_id2str()
* test/-ext-/symbol/test_type.rb (module Test_Symbol): verify symbol
  table entries are fstrings

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44057 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44018 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

* string.c (fstr_update_callback): move a variable declaration since
  ISO C90 forbids mixed declarations and code.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43988 b2dd03c8-39d4-4d8f-98ff-823fe69b080e