[R-Forge #5008] .SD drops columns if name is duplicated

[arunsrinivasan]

Submitted by: Ricardo Saporta; Assigned to: Arun ; R-Forge link

When duplicate column names exist, .SD drops columns

DT <- data.table(x=1:3, x=11:13)

## Works Fine
DT[, names(DT)=="x", with=FALSE]

## Looses Second Column
DT[, names(DT)=="x", with=FALSE][, .SD]

[arunsrinivasan]

Also updated this SO post and here's the commit that fixed handling duplicate names: 9f0a7f8