Emoticons seem to be specified using a format of U+xxxxx
wherein each x is a hexadecimal digit.
For example, U+1F615 is the official Unicode Consortium code for the "confused face" 😕
As I am often confused, I have a strong affinity for this symbol.
The U+1F615 representation is confusing to me because I thought the only encodings possible for unicode characters required 8, 16, 24 or 32 bits, whereas 5 hex digits require 5x4=20 bits.
I've discovered that this symbol seems to be represented by a completely different hex string in bash:
$echo -n 😕 | hexdump 0000000 f0 9f 98 95 0000004 $echo -e "\xf0\x9f\x98\x95" 😕 $PS1=$'\xf0\x9f\x98\x95 >' 😕 >
I would have expected U+1F615 to convert to something like \x00 \x01 \xF6 \x15.
I don't see the relationship between these 2 encodings?
When I lookup a symbol in the official Unicode Consortium list, I would like to be able to use that code directly without having to manually convert it in this tedious fashion. i.e.
- finding the symbol on some web page
- copying it to the clipboard of the web browser
- pasting it in bash to echo through a hexdump to discover the REAL code.
Can I use this 20-bit code to determine what the 32-bit code is?
Does a relationship exist between these 2 numbers?