How to convert a formatted string into plain text

Question

User copy paste and send data in following format: "𝕛𝕠𝕧𝕪 𝕕𝕖𝕓𝕓𝕚𝕖" I need to convert it into plain txt (we can say ascii chars) like 'jovy debbie' It comes in different font and format: ex: '𝑱𝒆𝒏𝒊𝒄𝒂 𝑫𝒖𝒈𝒐𝒔' '𝙶𝚎𝚟𝚒𝚎𝚕𝚢𝚗 𝙽𝚒𝚌𝚘𝚕𝚎 𝙻𝚞𝚖𝚋𝚊𝚐'

Any Help will be Appreciated, I already refer other stack overflow question but no luck :(

Answer 1

Those letters are from theMathematical Alphanumeric Symbols block.

Since they have a fixed offset to their ASCII counterparts, you could use tr to map them, eg:

"𝕛𝕠𝕧𝕪 𝕕𝕖𝕓𝕓𝕚𝕖".tr("𝕒-𝕫", "a-z")
#=> "jovy debbie"

The same approach can be used for the other styles, eg

"𝑱𝒆𝒏𝒊𝒄𝒂 𝑫𝒖𝒈𝒐𝒔".tr("𝒂-𝒛𝑨-𝒁", "a-zA-Z")
#=> "Jenica Dugos"

This gives you full control over the character mapping.

Alternatively, you could try Unicode normalization . The NFKC / NFKD forms should remove most formatting and seem to work for your examples:

"𝕛𝕠𝕧𝕪 𝕕𝕖𝕓𝕓𝕚𝕖".unicode_normalize(:nfkc)
#=> "jovy debbie"

"𝑱𝒆𝒏𝒊𝒄𝒂 𝑫𝒖𝒈𝒐𝒔".unicode_normalize(:nfkc)
#=> "Jenica Dugos"