Allow bare variable names in l_XXX calls

[fabian-s]

Thx for this great package!

I think it would be even more awesome if I didn't have to "quote" all my "variables".
check1D(v, x = x3) :+1: , check1D(v, x = "x3") :-1:

[mfasiolo]

Thanks, I'm glad someone is using it!

I was thinking about it, but it is a bit difficult to cover all the cases:

• check1D(v, x = "x3") with x3 in fit$model;

• check1D(v, x = 1:10) ;

• check1D(v, x = x4) with global variable x4 <- 1:10;

• check1D(v, x = xv[1]) with global xv <- c("x1", "x2") and x1, x2 in fit$model;

By using "quotes" to distinguish variables in fit$model from the global ones it is easy to cover the 4 cases, but maybe something better can be done using substitute, parse etc.

[fabian-s]

I see, yeah, that's (too) tough to solve....