I'm the one who made that change. In college, I was taught that putting a comma or period right after a quotation mark is improper punctuation, and that it doesn't matter whether or not it's part of the quote. Apparently, this is an American rule, as I've recently learned, but since Breaking Bad is an American show and Wikia is a US-based service, it seems fair to me.

Hi G-reaper,

If it's an American rule, ok, fine then. It's just weird for Europeans. I guess it just makes easier for you to punctuate, but it still feels so wrong for US outsiders.

Cheers.

I was told once that the reason for the American difference stems from variations between the types of printing presses used in England versus the ones used in the colonies back when Europeans were first settling here. With the American printing presses, the stamps for commas and periods were only half as tall as the other stamps. If a line of text ended with a period that stamp would often be pushed out of place with each pressing, meaning that the press had to be reset after each run. By contrast, the stamps for quotation marks were as tall as a line of text, so when the punctuation is put inside of the quotes the smaller stamps wouldn't shift with each pressing. The taller quotation pieces served to hold the period in place.

I'm not sure if that's true, but it seems like a plausible explanation for the difference.

Personally, I've wavered between the two uses. As a child I was taught that punctuation always goes inside the quotes. As I got older I started putting them outside when called for according to the apparent international norms, but these days I've reverted back to my elementary school-derived American usage.

That is very interesting TroutFishingUSA, meaning this norm was adopted for a pragmatical use of the technology of that time, and not to follow the proper use of the language.