When removing emojis with .gsub, I'm getting error on compare with empty string. about unicode-emoji HOT 2 CLOSED

Hey Andre,

although REGEX_ANY does match a lot of emoji-related codepoints, it does not match some Unicode-codepoints that are used by emoji, but are also used outside of the emoji-world, like U+200D zero-width joiner. That's exactly what is happening here, there is still a ZJW in the data:

uniscribe '🛤🎯📮📘↕⭕🇬🇶🇼🇸📪🛎👨‍🌾🏺🐚🤯'.gsub(Unicode::Emoji::REGEX_ANY, '')

200D ├─ ]‍[		├─ ZERO WIDTH JOINER

I've clarified this behavior in the README table.

What you want to do is to use REGEX which gives you better (and more robust) results. For example:

uniscribe '🛤🎯📮📘↕⭕🇬🇶🇼🇸📪🛎👨‍🌾🏺🐚🤯'.gsub(Unicode::Emoji::REGEX, '')

Unfortunately, this will let through textual emoji like

2195 ├─ ↕		├─ UP DOWN ARROW`

To work around this issue, you can also remove emoji that respond to REGEX_TEXT, for example, like this:

'🛤🎯📮📘↕⭕🇬🇶🇼🇸📪🛎👨‍🌾🏺🐚🤯'.gsub(Regexp.union(Unicode::Emoji::REGEX, Unicode::Emoji::REGEX_TEXT), '') == "" # => true

Please leave some feedback, if this fixes your issue.

Actually, your feedback inspired me to have a REGEX_ALL regex in a future version of this gem, which will include textual emoji in its regex, see #5

from unicode-emoji.

Closing, please re-open if problem persists

from unicode-emoji.