Support `&.` at the beginning of the line.
MODIFY
mrbgems/mruby-compiler/core/parse.y
mrbgems/mruby-compiler/core/parse.y
@@ -4762,6 +4762,15 @@ parser_yylex(parser_state *p)
pushback(p, '.');
goto retry;
}
+ pushback(p, c);
+ goto normal_newline;
+ case '&':
+ if (peek(p, '.')) {
+ pushback(p, '&');
+ goto retry;
+ }
+ pushback(p, c);
+ goto normal_newline;
case -1: /* EOF */
case -2: /* end of a file */
goto normal_newline;

Support `&.` at the beginning of the line.