How to Say Blessings for an Aliyah

One who receives an aliyah opens the Torah, sees the verse that needs to be read and then recites the blessing when the Torah is open. And at the end of Massechet Megilah, the Tana'im disagree about this. Rabbi Meir says that one should look at the verse, roll up the scroll, and then recite the blessing, and only afterwards open the Torah again and read. And the reason is that if a blessing were said while the Torah were open people would say that the blessings too were written inside the Torah scroll. And Rabbi Yehudah says that one should open the scroll and see the verse and then recite the blessing while the Torah is open. And we are not concerned lest people say that the blessing is written in the Torah. And the Halakhah is decided that one opens the scroll, looks, and then recites a blessing. And this is the decision of Rambam in Chapter 12 of the Laws of Prayer and the Tur and Shulhan Arukh in 139:4 and this is our practice. However, our teachers, the Tosafot wrote that ideally one should roll up the Torah before reciting the blessing. And it seems that Tosafot are of the opinion that even Rabbi Yehudah conceded that it was better to roll the Torah scroll before reciting the blessing and he only differed with Rabbi Meir in his opinion that it was not necessary to do so (and the Ba"H says the same). And there are some who practice this way. And I don't know if it is correct to do this since it does not seem to be the right way to do things based on all of the poskim. And they are of the opinion that according to Rabbi Yehuda one should davka say the blessing while the Torah is open since it must be read - how can it be closed?! Therefore, they all decided that after the Torah is read it should be rolled before the blessing after the reading since the reading is complete the Torah should be closed for the next person to come up and open it. [And in the book Etz Ahim page 72b he writes also like Toafot. And see Magen Avraham subparagraph 6 and see Taz, subparagraph 4, and the Ba"h and the Eliya Rabbah, subparagraph 7. And they all agree with the decision of the Tur and the Shulhan Arukh. And that which the Taz wrote that the Tosafot disagreed between Talmudic times and our times, see there, and I don't know what pushed them to say that and their rationale is as I have written and the Ba"H says so as well.]...