1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
def try_require path
require path
rescue LoadError
puts $!.class
rescue
p $!
end
def clear
$:.clear
$".clear
end
p $: # []
puts '-' * 100
clear
try_require "Require.1.rb" # Error
$:[0] = "."
try_require "Require.1.rb" # Loaded: 1
clear
$:[0] = 1
try_require "Require.1.rb" # Error
clear
class S
def to_s; "Require.1.rb"; end
end
$:[0] = S.new
try_require "Require.1.rb" # Error
clear
puts '-' * 100
p $:
$foo = []
alias $old_colon $:
alias $: $foo
p $old_colon
p $:
try_require "Require.1.rb" # Error -> alias ignored
alias $: $old_colon
|
