Are there cultures in which the decimal separator is longer than one character?

问题

I must write a stringToNumber parsing function that can use custom strings for the following:

• decimal separator (. for en-US => 3.1415)
• thousands separator (, for en-US => 1,000,000)
• positive sign (+ for en-US => +5)
• negative sign (- for en-US => -5)

Can I assume that these are only one character (which would make the implementation easier) or are there any cultures in which any of these are longer?

来源：https://stackoverflow.com/questions/46538917/are-there-cultures-in-which-the-decimal-separator-is-longer-than-one-character