[asicsp]

If quoted string is the only thing you need to handle extra (i.e. no escaped quotes, newlines, etc) and if you have GNU awk:

    $ echo '"foo","bar,baz"' | awk -v FPAT='"[^"]*"|[^,]*' '{print $1}'
    "foo"
    $ echo '"foo","bar,baz"' | awk -v FPAT='"[^"]*"|[^,]*' '{print $2}'
    "bar,baz"

For a more robust solution, see https://stackoverflow.com/q/45420535 or use other tools like https://github.com/BurntSushi/xsv

[poetaster]

I wanted to ask why not the more simple form:

echo '"foo","bar,baz","boo"' | awk -F"\",\"" '{print $1}' "foo

echo '"foo","bar,baz","boo"' | awk -F"\",\"" '{print $2}' bar,baz

echo '"foo","bar,baz","boo"' | awk -F"\",\"" '{print $3}' boo"

Realizing that I have to strip the quotes that remain.

Edit. formatting.

EDit, again, from your link, the following is more terse and too my taste (still needs strips):

awk -v FPAT='("[^"]*")+'