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--> message_format_utf8/input.sol

Warning: Source file does not specify required compiler version!
--> message_format_utf8/input.sol

Warning: Statement has no effect.
 --> message_format_utf8/input.sol:2:51:
  |
2 | /* ©©©©ﾩ©©©©© 2017 */ constructor () { unicode"©©©©ﾩ©©©©©" ; }
  |                                        ^^^^^^^^^^^^^^^^^^^

Warning: Statement has no effect.
 --> message_format_utf8/input.sol:6:25:
  |
6 |                         unicode"S = π × r²";
  |                         ^^^^^^^^^^^^^^^^^^^

Warning: Statement has no effect.
 --> message_format_utf8/input.sol:7:39:
  |
7 | /* ₀₁₂₃₄⁵⁶⁷⁸⁹ */		unicode"∑ 1/n! ≈ 2.7";                 // tabs in-between
  |                 		^^^^^^^^^^^^^^^^^^^^^

Warning: Statement has no effect.
 --> message_format_utf8/input.sol:8:30:
  |
8 | /* Ŀŏŗėɯ ïƥŝʉɱ */		unicode"μὴ		χεῖρον		βέλτιστον"; // tabs in-between and inside
  |                  		^^^^^^^^^^		^^^^^^		^^^^^^^^^^

Warning: Function state mutability can be restricted to pure
  --> message_format_utf8/input.sol:12:2:
   |
12 | 	function selector() public returns(uint) { // starts with tab
   | 	^ (Relevant source part starts here and spans across multiple lines).