Re: Unicode

$ python
Python 2.7.16 (default, Mar 4 2019, 15:29:09) 
[GCC 8.3.0] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> 🐧=42
 File "<stdin>", line 1
 🐧=42
 ^
SyntaxError: invalid syntax
$ python3
Python 3.7.2+ (default, Feb 27 2019, 15:41:59) 
[GCC 8.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> 🐧=42
 File "<stdin>", line 1
 🐧=42
 ^
SyntaxError: invalid character in identifier
$ export 🐧=42
bash: export: « 🐧=42 » : identifiant non valable
$ cat main.c
int main() {
 int 🐧=42;
 return 🐧;
}
$ gcc --version
gcc (Debian 8.3.0-2) 8.3.0
Copyright (C) 2018 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
$ gcc main.c 
main.c: In function ‘main’:
main.c:2:6: error: stray ‘360円’ in program
 int ����=42;
 ^
main.c:2:7: error: stray ‘237円’ in program
 int ����=42;
 ^
main.c:2:8: error: stray ‘220円’ in program
 int ���=42;
 ^
main.c:2:9: error: stray ‘247円’ in program
 int ��=42;
 ^
main.c:2:10: error: expected identifier or ‘(’ before ‘=’ token
 int 🐧=42;
 ^
main.c:3:9: error: stray ‘360円’ in program
 return ����;
 ^
main.c:3:10: error: stray ‘237円’ in program
 return ����;
 ^
main.c:3:11: error: stray ‘220円’ in program
 return ���;
 ^
main.c:3:12: error: stray ‘247円’ in program
 return ��;
 ^
main.c:3:2: warning: ‘return’ with no value, in function returning non-void
 return 🐧;
 ^~~~~~
main.c:1:5: note: declared here
 int main() {
 ^~~~
$ ruby --version
ruby 2.5.3p105 (2018年10月18日 revision 65156) [x86_64-linux-gnu]
$ irb
irb(main):001:0> 🐧=42
=> 42
irb(main):002:0> print 🐧
42=> nil
$ cat t.pl 
my $🐧=42;
print $🐧;
$ perl --version
This is perl 5, version 28, subversion 1 (v5.28.1) built for x86_64-linux-gnu-thread-multi
(with 59 registered patches, see perl -V for more detail)
(...)
$ perl t.pl 
Can't use global $� in "my" at t.pl line 1, near "my $�"
Unrecognized character \x9F; marked by <-- HERE after my $�<-- HERE near column 6 at t.pl line 1.