Here’s something not many people working with PO files have run into. What happens when your english/translated string contains a <b> tag and you try to display that string on a webpage? Luckily I have one of those (in Asunder, where it’s actually a GTK formatting tag, not an HTML tag), so I ran into this problem already.
Piece of cake to fix, PHP has a function called htmlspecialchars() which will escape the special-meaning characters such as “<” in strings. I can use that function before sending my strings over as HTML.
Now what happens if my PHP sends the browser not HTML but JSON, and I construct the page using the data in that JSON? Any guesses? Nothing happens. Because I create a DOM text node and put the string into there – it just shows up with the “<” and ‘”‘ and all the other special chars.