The x option indicates that most white space should be ignored. That allows me to use spaces to break up the regex a little to make it easier to see where each field is.

The first field is captured by (\S+)\s+ which grabs the first sequence of non-space characters from the start of the line.

The second field is captured by ([^:]+):\s+ which matches and captures a sequence of characters excluding ':', then matches the ':' and any following white space.

The third field is a little more interesting. ((?:(?!\s*\(rev).)+))\s* crawls along the remainder of the line matching and capturing one character at a time until it comes to '(rev' preceeded by any amount of white space. The (?:...) bit groups some stuff without capturing. The (?!...) bit looks ahead to make sure the following stuff doesn't match whatever '...' is. The '...' bit inside of (?:...) matches a single character so long as it's not the start of something that would match '\s*\(rev'.

The fourth field just picks up everything from '(Rev' to the end of the line.

DWIM is Perl's answer to Gödel

In reply to Re^3: splitting lspci output by GrandFather
in thread splitting lspci output by rimmern

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