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|
def d s
a = []
if !s.nil? then
s.each_byte { |b| a << b.to_s(16) }
end
p a
end
aleph = "\xd7\x90"
puts '-- kcode not used by literal string ctor'
$KCODE = "u"
u = aleph
$KCODE = "n"
a = aleph
/(.)/ =~ u
d $1
/(.)/ =~ a
d $1
puts '-- kcode not used by string ctor'
$KCODE = "u"
u = String.new(aleph)
$KCODE = "n"
a = String.new(aleph)
/(.)/ =~ u
d $1
/(.)/ =~ a
d $1
puts '-- kcode not used by regex ctor'
x = aleph
$KCODE = "u"
ru = /(.)/
$KCODE = "n"
ra = /(.)/
ru =~ x
d $1
ra =~ x
d $1
puts '-- kcode read by regex match'
x = aleph
$KCODE = "u"
/(.)/ =~ x
d $1
$KCODE = "n"
/(.)/ =~ x
d $1
puts '-- regex option --'
/(.)/u =~ x rescue puts $!
d $1
/(.)/n =~ x
d $1
puts '-- kcode read directly, not using globals table'
x = aleph
$k = "u"
alias $old_KCODE $KCODE
alias $KCODE $k
p $old_KCODE
p $KCODE
/(.)/ =~ x
d $1
alias $KCODE $old_KCODE # restore
puts '-- assignment --'
class C
def to_s
"C.new"
end
def to_str
"u"
end
end
def try_set value
$KCODE = value
rescue
puts "#{value.inspect} -> error: #{$!}"
else
puts "#{value.inspect} -> #{$KCODE.inspect}"
end
try_set 1
try_set nil
try_set C.new
try_set ""
try_set "foo"
try_set "a"
try_set "A"
try_set "n"
try_set "N"
try_set "s"
try_set "S"
try_set "e"
try_set "E"
try_set "u"
try_set "U"
try_set "Uxx"
try_set "Exx"
try_set "Sxx"
puts '-- mutability --'
$KCODE = "u"
p $KCODE
($KCODE[0] = 'x') rescue puts $!
p $KCODE
puts '-- KCODE usage --'
x = aleph
$KCODE = "a"
p x.inspect.length
p x.length
$KCODE = "u"
p x.inspect.length
p x.length
|
