I have to match /home/user/file.lib both in

bibliography: /home/user/file.lib

as well as

bibliography: "/home/user/file.lib"

in Lua.

The best I came up with is:

> s1 = "bibliography: /home/user/file.lib"
> s2 = 'bibliography: "/home/user/file.lib"'
> string.match(s1, 'bibliography: "?(%g+)"?')
/home/user/file.lib
> string.match(s2, 'bibliography: "?(%g+)"?')
/home/user/file.lib"

But the last match contain a trailing ".

It looks like I need a non-greedy version of the + operator, and it looks like Lua doesn’t have it.

How can I achieve my purpose?