Eventually I found this: twitter-text.js useful link, which is basically how twitter solve this problem.
Regex for a (twitter-like) hashtag that allows non-ASCII characters
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31-05-2022 - |
문제
I want a regex to match a simple hashtag like that in twitter (e.g. #someword). I want it also to recognize non standard characters (like those in Spanish, Hebrew or Chinese).
This was my initial regex: (^|\s|\b)(#(\w+))\b
--> but it doesn't recognize non standard characters.
Then, I tried using XRegExp.js, which worked, but ran too slowly.
Any suggestions for how to do it?
해결책
다른 팁
With native JS regexes that don't support unicode, your only option is to explicitly enumerate characters that can end the tag and match everything else, for example:
> s = "foo #הַתִּקְוָה. bar"
"foo #הַתִּקְוָה. bar"
> s.match(/#(.+?)(?=[\s.,:,]|$)/)
["#הַתִּקְוָה", "הַתִּקְוָה"]
The [\s.,:,]
should include spaces, punctuation and whatever else can be considered a terminating symbol.
#([^#]+)[\s,;]*
Explanation: This regular expression will search for a #
followed by one or more non-#
characters, followed by 0 or more spaces, commas or semicolons.
var input = "#hasta #mañana #babהַ";
var matches = input.match(/#([^#]+)[\s,;]*/g);
Result:
["#hasta ", "#mañana ", "#babהַ"]
EDIT - Replaced \b for word boundary