library(foreach)

foreach(i = 1:3) %:% foreach(j = i:3, .options.foo = "bar") %do% seq(i, j) |> str()
#> Error in eval(expr, envir, enclos): object 'i' not found

# Expected result
foreach(i = 1:3) %:% foreach(j = i:3) %do% seq(i, j) |> str()
#> List of 3
#>  $ :List of 3
#>   ..$ : int 1
#>   ..$ : int [1:2] 1 2
#>   ..$ : int [1:3] 1 2 3
#>  $ :List of 2
#>   ..$ : int 2
#>   ..$ : int [1:2] 2 3
#>  $ :List of 1
#>   ..$ : int 3