Fixed a bug in `mirb` heredoc handling; fix #3989

include/mruby/compile.h

@@ -143,7 +143,6 @@ struct mrb_parser_state {
   mrb_ast_node *heredocs_from_nextline;
   mrb_ast_node *parsing_heredoc;
   mrb_ast_node *lex_strterm_before_heredoc;
-  mrb_bool heredoc_end_now:1; /* for mirb */
 
   void *ylval;
 

mrbgems/mruby-bin-mirb/tools/mirb/mirb.c

@@ -126,10 +126,6 @@ is_code_block_open(struct mrb_parser_state *parser)
 
   /* check for heredoc */
   if (parser->parsing_heredoc != NULL) return TRUE;
-  if (parser->heredoc_end_now) {
-    parser->heredoc_end_now = FALSE;
-    return FALSE;
-  }
 
   /* check for unterminated string */
   if (parser->lex_strterm) return TRUE;

mrbgems/mruby-compiler/core/parse.y

@@ -1078,7 +1078,6 @@ heredoc_end(parser_state *p)
     end_strterm(p);
     p->lex_strterm = p->lex_strterm_before_heredoc;
     p->lex_strterm_before_heredoc = NULL;
-    p->heredoc_end_now = TRUE;
   }
   else {
     /* next heredoc */