It doesnβt matter how you avoid the β@β character, the reason for this is because SVN believes that the last β@β should indicate the version number (@REV format). To get around this, you need to add another β@β character at the end of the file name.
svn add Icon@2x.png @
If you need to add multiple files, it can be painful to type them all manually, but you can use xargs to automate this:
ls *2x.png | xargs -I x svn add x@
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