* enum.c (enum_each_slice, enum_each_cons): limit elements size by
the enumerator size. suggested by Hans Mackowiak <hanmac AT
gmx.de> at [ruby-core:68335]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49781 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* use rb_funcallv() for no arguments call instead of variadic
rb_funcall().
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49612 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* enum.c (enum_inject): return nil if no iteration, instead of
Qundef.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47928 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
(struct nmin_data): New field to record the n-th maximumelement, limit
(nmin_filter): Update limit field.
(nmin_i): Drop too big eleents.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47923 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
descending order.
[ruby-core:65452] Suggested by David Grayson.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47907 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* enum.c (enum_any): optimize object allocations for Array and
Hash when `each` is not redefined, always false if empty and the
case without a block. [fix GH-617]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46859 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* enum.c (enum_each_slice, enum_each_cons): make more efficient by
allocating less and recycling block argument arrays if possible.
[Fixes GH-596]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45589 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* enum.c (find_i): yield multiple values instead of a packed
array, so that lambda block can work. with tests by Alex
Rothenberg. [ruby-core:61340] [Bug #9605]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45286 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
optional argument.
(nmin_cmp): New function.
(nmin_block_cmp): Ditto
(nmin_filter): Ditto.
(nmin_i): Ditto.
(nmin_run): Ditto.
(enum_min): Call nmin_run if the optional argument is given.
(nmin_max): Ditto.
(nmin_min_by): Ditto.
(nmin_max_by): Ditto.
* range.c: Range#{min,max} extended to take an optional argument.
(range_min): Call range_first if the optional argument is given.
(range_max): Call rb_call_super if the optional argument is given.
[ruby-core:57111] [Feature #8887]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44958 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* include/ruby/ruby.h (RB_BLOCK_CALL_FUNC_ARGLIST): for declaration
argument list of rb_block_call_func.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43910 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
there are not new relations.
* enum.c (enum_sort_by): ditto.
* struct.c (setup_struct): use RARRAY_RAWPTR().
* vm_eval.c (yield_under): ditto.
* ext/pathname/pathname.c (path_entries): use RARRAY_AREF().
* ext/pathname/pathname.c (path_s_glob): ditto.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42688 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
RBASIC_CLASS(obj) macro which returns a class of `obj'.
This change is a part of RGENGC branch [ruby-trunk - Feature #8339].
* object.c: add new function rb_obj_reveal().
This function reveal interal (hidden) object by rb_obj_hide().
Note that do not change class before and after hiding.
Only permitted example is:
klass = RBASIC_CLASS(obj);
rb_obj_hide(obj);
....
rb_obj_reveal(obj, klass);
TODO: API design. rb_obj_reveal() should be replaced with others.
TODO: modify constified variables using cast may be harmful for
compiler's analysis and optimizaton.
Any idea to prohibt inserting RBasic::klass directly?
If rename RBasic::klass and force to use RBASIC_CLASS(obj),
then all codes such as `RBASIC(obj)->klass' will be
compilation error. Is it acceptable? (We have similar
experience at Ruby 1.9,
for example "RARRAY(ary)->ptr" to "RARRAY_PTR(ary)".
* internal.h: add some macros.
* RBASIC_CLEAR_CLASS(obj) clear RBasic::klass to make it internal
object.
* RBASIC_SET_CLASS(obj, cls) set RBasic::klass.
* RBASIC_SET_CLASS_RAW(obj, cls) same as RBASIC_SET_CLASS
without write barrier (planned).
* RCLASS_SET_SUPER(a, b) set super class of a.
* array.c, class.c, compile.c, encoding.c, enum.c, error.c, eval.c,
file.c, gc.c, hash.c, io.c, iseq.c, marshal.c, object.c,
parse.y, proc.c, process.c, random.c, ruby.c, sprintf.c,
string.c, thread.c, transcode.c, vm.c, vm_eval.c, win32/file.c:
Use above macros and functions to access RBasic::klass.
* ext/coverage/coverage.c, ext/readline/readline.c,
ext/socket/ancdata.c, ext/socket/init.c,
* ext/zlib/zlib.c: ditto.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40691 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Patch by Dan Bernier and Rich Bruchal of newhaven.rb
[Github documenting-ruby/ruby#8]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39370 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This makes Lazy#cycle no longer needed, so it was removed.
Make Enumerator#chunk and slice_before return lazy Enumerators.
[Bug #7715]
* internal.h: Remove ref to rb_enum_cycle_size; no longer needed
* enum.c: Make enum_cycle_size static.
* test/ruby/test_lazy_enumerator.rb: Test for above
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39058 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Update documentation for Array#select
* enum.c (enum_find_all, enum_reject):
Update documentation for Enumerable#find_all and Enumerable#reject
Based on a patch by Jeff Saracco
[Bug #6908] [ruby-core:47285] [Fixes#166 on github]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@36964 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
remove static.
* enumerator.c (lazy_init_iterator, lazy_init_yielder,
lazy_select_func, lazy_reject_func, lazy_grep_func): handle
multiple values correctly.
* enumerator.c (lazy_grep): change the behavior when a block is
given, to be consistent with Enumerable#grep.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35043 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Enumerable#reduce is alias. patched by milki@github.
https://github.com/ruby/ruby/pull/26
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@32595 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
- methods returning enumerators
- array methods and argument naming (array -> ary, an_array -> new_ary)
- minor improvements, typo fixed and styling issues
Other documentation errors fixed:
- return value was self instead of a new array (or vice-versa) for
Array#{pop,shift,permutation,repeated_permutation,keep_if}
- Array#rindex was missing the form with a block.
* dir.c: ditto.
* enum.c: ditto. Modified Enumerable#reverse_each' documentation to clarify
that #each will be finish before any element is yielded.
* error.c: ditto.
* gc.c: ditto.
* hash.c: ditto.
* io.c: ditto. IO#{codepoints,each_codepoint} fixed as per [ruby-core:23948]
* numeric.c: ditto.
* range.c: ditto.
* string.c: ditto.
* struct.c: ditto.
* vm_eval.c: ditto.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@27777 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
from yield into an array.
* lib/set.rb (Set#merge): use Enumerable#each_entry to implement
Set compatible to 1.8 behavior. [ruby-core:27985]
* lib/set.rb: replace is_a?(Enumerable) with respond_to?(:each)
for duck typing.
* lib/set.rb (SortedSet#add): typo fixed.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@26540 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
to_ary. Just call. [ruby-core:23738]
* eval.c (rb_check_funcall): new function with method existence
check. returns Qundef when the method does not exist.
* enumerator.c (enumerator_rewind): just call method, using
rb_check_funcall(). [ruby-core:23738]
* error.c (exc_equal): ditto.
* object.c (convert_type): ditto.
* error.c (rb_name_err_mesg_new): export function.
* eval.c (make_exception): ditto.
* io.c (pop_last_hash): return early when the last argument is nil.
* io.c (rb_io_puts): treat T_STRING specially for small
optimization.
* vm_eval.c (raise_method_missing): skip method call if possible
using rb_method_basic_definition_p().
* vm_eval.c (method_missing): ditto.
* test/ruby/test_rubyoptions.rb (TestRubyOptions#test_debug): test
suites changed to ignore exceptions caused by just-call policy.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@25556 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
value. the change was overridden by r23967. [ruby-core:24176]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@23978 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
needed. a patch from Marc-Andre Lafortune. [ruby-core:23661]
* enum.c (enum_first): call to_int once for an argument. based on
a patch from Marc-Andre Lafortune.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@23622 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This change stop to install node.h beacuase of saving ABI
(node.h will be changed. Extensions should not depends on
this file).
* blockinlining.c, class.c, compile.c, debug.h, enum.c,
gc.c, iseq.c, parse.y, ruby.c, signal.c, variable.c,
vm.c, vm_core.h, vm_dump.c: ditto.
* ext/ripper/depend: ditto.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19500 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
extra calls to is_pointer_to_heap() in GC.
* enum.c (enum_zip): ditto.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@17137 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
array.c (rb_ary_count): If no argument or block is given, count
the number of all elements.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@16693 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
the number of cycles is specified.
* array.c (rb_ary_cycle): Ditto for Array#cycle.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@15991 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
[ruby-dev:34313].
* array.c (rb_ary_index): Define find_index as an alias to index.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@15972 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
shortest length. [ruby-core:14738]
* enum.c (enum_zip): returns array not enumerator for no block
form. [ruby-core:14738]
* enumerator.c (next_ii): do not ignore multiple values yielded.
* array.c (rb_ary_zip): faster version without creating generators.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@14952 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
pack them into an array. [ruby-dev:32708]
* enum.c: all method but all?, any?, one? and none? passed packed
multiple values to the block.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@14667 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
compatibility with Enumerator#with_index(). a patch from Yusuke
ENDOH <mame AT tsg.ne.jp>. [ruby-dev:32195]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@13850 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
elements but first n. RDoc need to be updated.
* enumerator.c (Init_Enumerator): remove unnecessary symbol
initialization.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@13793 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
<david AT davidflanagan.com> in [ruby-core:12710].
* enum.c (enum_take, enum_drop): ditto.
* enum.c (enum_cycle): should not cause infinite loop for empty
arrays. [ruby-core:12710]
<david AT davidflanagan.com> in [ruby-core:12710].
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@13738 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
given. [ruby-core:12697]
* range.c (range_last): returns last n elements if argument is
given.
* array.c (rb_ary_subseq, rb_ary_last): export.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@13736 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
e.next has not been called before.
* enumerator.c (enumerator_next): raise StopIteration (name taken
from Python) instead of IndexError.
* enum.c (enum_zip): catch StopIteration exception.
* enumerator.c (enumerator_with_index): return Enumerator if no
block is given.
* test/ruby/test_iterator.rb (TestIterator::test_enumerator): add
test for enumerators.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@12905 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
values from the enumerable at once.
* enum.c (enum_minmax_by): ditto.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@12590 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
a patch from sheepman <sheepman AT sheepman.sakura.ne.jp>.
[ruby-dev:30846]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@12419 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* enum.c (one_i): no needs to iterate once the result became false.
* enum.c (enum_one): fix for an example.
* enum.c (one_iter_i, none_iter_i): DRY.;
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@12298 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
have to specify two argument method name as the first argument.
* enum.c (Init_Enumerable): reduce is new alias to inject.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@12297 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* lib/cgi.rb (CGI::out): should not convert utf-8 implicitly using
NKF. it is too Japanese centric.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@10853 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
(RARRAY_LEN): defined for accessing array members.
(RARRAY_PTR): ditto.
* array.c: use RARRAY_LEN and RARRAY_PTR.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@10833 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
(for constant reference).
* eval.c (rb_call0): use TMP_ALLOC() instead of allocating
a temporary array object.
* eval.c (eval): need not to protect $SAFE value.
[ruby-core:07177]
* error.c (Init_Exception): change NameError to direct subclass of
Exception so that default rescue do not handle it silently.
* struct.c (rb_struct_select): update RDoc description.
[ruby-core:7254]
* numeric.c (int_upto): return an enumerator if no block is
attached to the method.
* numeric.c (int_downto): ditto.
* numeric.c (int_dotimes): ditto.
* enum.c (enum_first): new method Enumerable#first to take first n
element from an enumerable.
* enum.c (enum_group_by): new method Enumerable#group_by that
groups enumerable values according to their block values.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@9880 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
proc object. [ruby-dev:28146]
* test/drb/drbtest.rb (DRbService::self.ext_service): increase
timeout limit. a patch from Kazuhiro NISHIYAMA
<zn at mbf.nifty.com>. [ruby-dev:28132]
* eval.c (ev_const_get): fixed a bug in constant reference during
instance_eval. [yarv-dev:707]
* eval.c (ev_const_defined): ditto.
* lib/yaml.rb (YAML::add_domain_type): typo fixed. a patch from
Joel VanderWerf <vjoel at path.berkeley.edu>.
[ruby-talk:165285] [ruby-core:6995]
* ext/digest/sha2/sha2.c (ULL): support AIX C. a patch from
Kailden <kailden at gmail.com>. [ruby-core:06984]
* ext/syck/rubyext.c (rb_syck_compile): avoid potential memory
leak.
* ext/syck/rubyext.c (syck_set_ivars): avoid potential memory
leak by explicit symbol allocation.
* lib/delegate.rb (Delegator::method_missing): should delegate
block as well.
* lib/cgi.rb (CGI::QueryExtension::MorphingBody): fix criteria to
use Tempfile. A fix from Zev Blut <rubyzbibd at ubit.com>.
[ruby-core:06076]
* string.c: remove global functions work on $_.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@9757 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
protect temporary context object. [ruby-dev:27979]
* ext/iconv/iconv.c (Init_iconv): rb_gc_register_address() should
be called before actual variable initialization.
[ruby-dev:27986]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@9673 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
no block is given.
* enumerator.c: moved from ext/enumerator.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@8764 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* array.c (rb_ary_update): a[n,m]=nil no longer works as element
deletion.
* enum.c (enum_sort_by): protect continuation jump in.
[ruby-dev:24642]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@7145 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
rb_io_fread() by freezing it temporarily. [ruby-dev:24479]
* dir.c (rb_push_glob): block call at once the end of method.
[ruby-dev:24487]
* ext/enumerator/enumerator.c (enum_each_slice): remove
rb_gc_force_recycle() to prevent potential SEGV.
[ruby-dev:24499]
* ext/zlib/zlib.c (zstream_expand_buffer): hide internal string
buffer by clearing klass. [ruby-dev:24510]
* ext/socket/socket.c (sock_s_getservbyaname): protocol string
might be altered. [ruby-dev:24503]
* string.c (rb_str_upto): check if return value from succ is a
string. [ruby-dev:24504]
* io.c (rb_io_popen): get mode string via rb_io_flags_mode() to
avoid mode string modification. [ruby-dev:24454]
* io.c (rb_io_getline_fast): should take delim as unsigned char to
distinguish EOF and '\377'. [ruby-dev:24460]
* io.c (rb_io_getline): add check for RS modification.
[ruby-dev:24461]
* enum.c (enum_sort_by): use qsort() directly instead using
rb_iterate(). [ruby-dev:24462]
* enum.c (enum_each_with_index): remove rb_gc_force_recycle() to
prevent access to recycled object (via continuation for
example). [ruby-dev:24463]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@7071 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* io.c (rb_io_flags_mode): requires output buffer no more. no
allocation needed.
* array.c (rb_ary_index): takes a block to compare items in an
array. [ruby-talk:113069] [Ruby2]
* array.c (rb_ary_rindex): ditto.
* marshal.c (r_byte): retrieve pointer from string value for each
time. [ruby-dev:24404]
* marshal.c (r_bytes0): ditto.
* enum.c (sort_by_i): re-entrance check added. [ruby-dev:24399]
* io.c (io_read): should freeze all reading buffer.
[ruby-dev:24400]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@6996 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
one defined in object.c.
* object.c (Init_Object): remove Kernel#to_a.
* enum.c (enum_zip): use "to_a" instead of "to_ary".
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@5968 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
return from the yielded block.
* hash.c (delete_if_i): use st_delete_safe() (via
rb_hash_delete()) instead of returning ST_DELETE.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@5842 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
before detach pid. [ruby-talk:71519]
* eval.c (PUSH_FRAME): save outer ruby_block. [ruby-list:37677],
[ruby-dev:20202]
* eval.c (BEGIN_CALLARGS): restore outer block by using
ruby_block->outer.
* eval.c (block_pass): do not alter block->prev, but block->outer.
* array.c (get_inspect_tbl): warning on wrong condition.
* eval.c (localjump_xvalue): renamed exitstatus to exit_value
since it's not exit "status" after all.
* eval.c (localjump_error): add reason to LocalJumpError.
* compar.c (rb_cmpint): raise error via rb_cmperr(), if cmp value
is nil. now take new 2 arguments.
* time.c (time_cmp): 2003-05-16 fix was incomplete.
(ruby-bugs-ja:PR#458)
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@3823 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
empty path, just ignore.
* dir.c: remove <sys/parm.h> inclusion.
* compar.c (cmp_eq,cmp_gt,cmp_ge,cmp_lt,cmp_le): check using
rb_cmpint().
* error.c (init_syserr): remove sys_nerr dependency.
* numeric.c (num_cmp): added to satisfy Comparable assumption.
* eval.c (rb_add_method): "initialize" should be public if it is a
singleton method.
* regex.c (re_match): avoid dereferencing if size == 0.
(ruby-bugs-ja:PR#360)
* time.c (time_cmp): should return nil if an operand is not a
number nor time. (ruby-bugs-ja:PR#359)
* file.c (rb_stat_cmp): should return nil if an operand is not
File::Stat.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@3076 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
zipped with nil if argument arrays are shorter. if arrays are
longer, left items are ignored. now works with blocks.
* enum.c (zip_i): changed for new behavior.
* array.c (rb_ary_transpose): added. [new]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@3064 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* enum.c (enum_find): do not use rb_eval_cmd(); should not accept
a string for if_none.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@2679 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
suggested by Guy Decoux.
* hash.c (rb_hash_s_create): use rb_hash_aset() instead of calling
st_insert() directly, to dup&freeze string keys.
* parse.y (yylex): proper error message for "@@0".
* parse.y (yylex): paren to parse_string() must be zero for
unparenthesized strings.
* parse.y (str_extend): broken string when unterminated "#{".
* enum.c (enum_sort_by): had a bug in 1 element enumeration.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@2565 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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