Regex matching emoticons

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Match emoji first (to take care of the :pencil: example) and then check for a terminating whitespace or newline:

(\:\w+\:|\<[\/\\]?3|[\(\)\\\D|\*\$][\-\^]?[\:\;\=]|[\:\;\=B8][\-\^]?[3DOPp\@\$\*\\\)\(\/\|])(?=\s|[\!\.\?]|$)

This regex matches the following (preferring emoji) returning the match in matching group 1:

:( :) :P :p :O :3 :| :/ :\ :$ :* :@
:-( :-) :-P :-p :-O :-3 :-| :-/ :-\ :-$ :-* :-@
:^( :^) :^P :^p :^O :^3 :^| :^/ :^\ :^$ :^* :^@
): (: $: *:
)-: (-: $-: *-:
)^: (^: $^: *^:
<3 </3 <\3
:smile: :hug: :pencil:

It also supports terminal punctuation as a delimiter in addition to white space.

You can see more details and test it here: https://regex101.com/r/aM3cU7/4

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