tompng

# https://github.com/ruby/reline/pull/632

sizes=[]
CHUNK_LAST.zip(CHUNK_WIDTH).each{sizes << _2 while sizes.size <= [_1, 0x10ffff].min };
BITCHUNKS = sizes.each_slice(2048).map do |seg|
  next seg.first if seg.uniq.size == 1
  seg.each_slice(64).map do |sub|
    next sub.first if sub.uniq.size == 1
    s = sub.map { _1 == -1 ? 3 : _1 }.reverse.join
    num = s.to_i(4)

tompng

def series(l, r)
  if r - l <= 1
    p = (2 * r - 1) * (6 * r - 5) * (6 * r - 1)
    q = r * r * r * 10939058860032000
    a = (r % 2 == 0 ? 1 : -1) * (13591409 + 545140134 * r)

    [p, q, a * p]
  else
    m = (l + r) / 2
    p0, q0, t0 = series(l, m)

tompng

MAYBE_TIOCGETC = [
  0x40067412, # M2 Mac
  2, # docker rubyfarm? something is wrong

  # unknown, found in github search
  ('T'.ord << 8) | 2,
  ('t'.ord << 8) | 18
]
cchars = "\0" * 256
STDIN.ioctl(TIOCGETC, cchars)

tompng

def fibo_c(n)
  return 1 if n == 0
  a=fibo_c(n/2)*b=1i**n[0]
  b.*a.abs2+(a.*2+1i).real*a.imag.i
end

10.times.map{fibo_c(_1).real}
# => [1, 1, 2, 3, 5, 8, 13, 21, 34, 55]

tompng

class Integer
  def self.isqrt(n)
    return 0 if n == 0
    return 1 if n < 4
    shift = [n.bit_length / 4, 1].max
    x = Integer.isqrt(n >> (shift * 2))
    x = (x << (shift - 1)) + (n >> (shift + 1)) / x
    xx = x * x
    while xx > n
      xx -= 2 * x - 1

tompng

def big_divmod(numerator, denominator)
  numerator_bits = numerator.bit_length
  denominator_bits = denominator.bit_length
  inv = 1
  accuracy_bits = 1
  target_bits = [numerator_bits - denominator_bits]
  while target_bits[0] > 1
    target_bits.unshift (target_bits[0] * 4 + 1)/ 7
  end
  accuracy_bits = target_bits.shift

tompng

def string_radix(s)
  if s.match?(/0x/i)
    [16, 2]
  elsif s.match?(/0o/i)
    [8, 2]
  elsif s.match?(/0b/i)
    [2, 2]
  elsif s.start_with?('0')
    [8, 0]
  else

tompng

def sum_reg(a, b, fallback = nil)
  fragments = (0..18).map do |sum|
    ".*\\k<#{a}>.{#{sum/2+5}}_.{#{sum-sum/2+5}}\\k<#{b}>.*-.{#{sum%10}}"
  end
  fragments << ".*-.{#{fallback}}" if fallback
  "(?:#{fragments.join('|')})"
end

S = '9876543210___________0123456789-0123456789'

tompng

tompng

require 'pty'
require 'io/console'
if ARGV.empty?
  puts <<~EOS
    Reline Visualizer (Minimal terminal emulator that only supports Reline's escape sequences)
    Usage: ruby #{__FILE__} <command>'
    ruby #{__FILE__} irb
    ruby #{__FILE__} bash
    ruby #{__FILE__} zsh
    ruby #{__FILE__} ruby -I path/to/reline/lib -I path/to/irb/lib path/to/irb/exe/irb