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What symbols/characters are not allowed in tags?
I'm curious simply because I'm writing JS script that does tagging similar to SO, what characters are allowed in tags on SO?
Is it alphanumerics and some others like # and _?
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1 Answer
From the side box that pops up when you are tagging a question:
How to Tag A tag is a keyword or label that categorizes your question with other, similar questions.
► favor existing popular tags; avoid creating new tags
► use common abbreviations
► don't include synonyms
► combine multiple words into single-words with dashes
► maximum of 5 tags, 25 chars per tag
► tag characters: [a-z 0-9 + # - .]
► delimit tags by space, semicolon, or comma
so out of your set, _ is not permitted.
