Fixes [Bug #18826]

Co-authored-by: Nobuyoshi Nakada <[email protected]>

This reverts commit 2727815 and
58dc8bf.

Visibility is an attribute of the method entry in a class, not an
attribute of the Method object.

Fixes [#18729]
Fixes [#18751]
Fixes [#18435]

…y/rdoc#911)

ruby/rdoc@dc88f1b425

Since `RUBY_DEVEL` in cppflags has no effect in the configure script
and makefiles.

exts.mk files are one level under the top of extension directories.

Clean built directories by `make distclean`, and then clean leftover
makefiles for skipped extensions.

* Fix Array#[] with ArithmeticSequence with negative steps

Previously, Array#[] when called with an ArithmeticSequence
with a negative step did not handle all cases correctly,
especially cases involving infinite ranges, inverted ranges,
and/or exclusive ends.

Fixes [Bug #18247]

* Add Array#slice tests for ArithmeticSequence with negative step to test_array

Add tests of rb_arithmetic_sequence_beg_len_step C-API function.

* Fix ext/-test-/arith_seq/beg_len_step/depend

* Rename local variables

* Fix a variable name

Co-authored-by: Kenta Murata <[email protected]>

…rdoc#913)

ruby/rdoc@7e6ef6c855

This is an inelegant hack, by manually checking for this specific
code point in rb_str_inspect.  Some testing indicates that this is
the only code point affected.

It's possible a better fix would be inside of lower-level encoding
code, such that rb_enc_isprint would return false and not true for
codepoint 0x85.

Fixes [Bug #16842]

ruby/rdoc@d00ddfe57c

ruby/rdoc@5506d4d67e

…orHighlight.spot

ruby/error_highlight@489ce80a62

`RbInstall::GemInstaller#build_extensions` has nothing to do.

As commented in include/ruby/internal/abi.h, since teeny versions of
Ruby should guarantee ABI compatibility, `RUBY_ABI_VERSION` has no role
in released versions of Ruby.

This patch is suggested by nobu.

Benchmark result:

```
require 'benchmark'

n = 10 ** 7

Benchmark.bm do |x|
  x.report("Fixnum/Fixnum") { a, b = 5, 2; n.times { a.ceildiv(b) } }
  x.report("Bignum/Bignum") { a, b = 10**100, 10**99 - 1; n.times { a.ceildiv(b) } }
  x.report("Bignum/Fixnum") { a, b = 10**100, 3; n.times { a.ceildiv(b) } }
end
```

Original:

```
       user     system      total        real
Fixnum/Fixnum  3.340009   0.043029   3.383038 (  3.384022)
Bignum/Bignum  8.229500   0.118543   8.348043 (  8.349574)
Bignum/Fixnum  8.328971   0.097842   8.426813 (  8.426952)
```

Improved:

```
       user     system      total        real
Fixnum/Fixnum  0.699140   0.000961   0.700101 (  0.700199)
Bignum/Bignum  5.076165   0.083160   5.159325 (  5.159360)
Bignum/Fixnum  5.548684   0.115372   5.664056 (  5.666735)
```

`Ripper::Lexer#parse` re-parses the source code with syntax errors
when `raise_errors: false`.

Co-Authored-By: tompng <[email protected]>

ruby/rdoc@c40bac829c

Fixes [Bug #13864]

ruby/rinda@3cd620f38c

…update`

rubygems/rubygems@0d321c9e3a

ruby/date@59a6673221

This test will prevent performance regressions like [Bug #18929].

* Simplify around `USE_YJIT` macro

- Use `USE_YJIT` macro only instead of `YJIT_BUILD`.
- An intermediate macro `YJIT_SUPPORTED_P` is no longer used.

* Bail out if YJIT is enabled on unsupported platforms

ruby/rdoc@488f89aee4

…merge