regex to match non-whitespace OR space prefixed with '\\'

Question

I have a space delimited list of files names, where spaces in the file names are prefixed by \'\\\'

e.g. \"first\\ file second\\ file\"

How can I get my rege

Answer 1

(\\ |[^ ])+

Everything except spaces, except when they're escaped. Should work, sorry for misunderstanding your question initially.