bash/bash-5.1/parse.y

3553   int retind, retsize, rflags;  local
3566   rflags = (qc == '"') ? P_DQUOTE : (flags & P_DQUOTE);
3716 		nestret = parse_matched_pair (ch, ch, ch, &nestlen, P_ALLOWESC|rflags);
3718 		nestret = parse_matched_pair (ch, ch, ch, &nestlen, rflags);
3722 …     if MBTEST((tflags & LEX_WASDOL) && ch == '\'' && (extended_quote || (rflags & P_DQUOTE) == 0))
3733 …if ((shell_compatibility_level > 42) && (rflags & P_DQUOTE) && (dolbrace_state == DOLBRACE_QUOTE2)…
3739 		  else if ((rflags & P_DQUOTE) == 0)
3752 … else if MBTEST((tflags & LEX_WASDOL) && ch == '"' && (extended_quote || (rflags & P_DQUOTE) == 0))
3781 	  nestret = parse_matched_pair (0, '`', '`', &nestlen, rflags);
3795 	    nestret = parse_comsub (0, '(', ')', &nestlen, (rflags|P_COMMAND) & ~P_DQUOTE);
3797 	    nestret = parse_matched_pair (0, '{', '}', &nestlen, P_FIRSTCLOSE|P_DOLBRACE|rflags);
3799 	    nestret = parse_matched_pair (0, '[', ']', &nestlen, rflags);
3911   int retind, retsize, rflags, hdlen;  local
3933   rflags = (flags & P_DQUOTE);
4373 	    nestret = parse_matched_pair (ch, ch, ch, &nestlen, P_ALLOWESC|rflags);
4375 	    nestret = parse_matched_pair (ch, ch, ch, &nestlen, rflags);
4379 	  if MBTEST((tflags & LEX_WASDOL) && ch == '\'' && (extended_quote || (rflags & P_DQUOTE) == 0))
4385 	      if ((rflags & P_DQUOTE) == 0)
4398 … else if MBTEST((tflags & LEX_WASDOL) && ch == '"' && (extended_quote || (rflags & P_DQUOTE) == 0))
4419 	    nestret = parse_comsub (0, '(', ')', &nestlen, (rflags|P_COMMAND) & ~P_DQUOTE);
4421 	    nestret = parse_matched_pair (0, '{', '}', &nestlen, P_FIRSTCLOSE|P_DOLBRACE|rflags);
4423 	    nestret = parse_matched_pair (0, '[', ']', &nestlen, rflags);