multi-line @rawNamespace + @import directives lead to mangled NAMESPACE on re-run

[MichaelChirico]

As noted here:

r-lib/lintr#2510

I've constructed a more minimal example with package:

DESCRIPTION file:
Package: myPkg
Version: 0.0.1
Encoding: UTF-8

R/foo.R:
#' @import stats
#' @rawNamespace
#' if (TRUE) {
#'   import(methods)
#' } else {
#'   import(utils)
#' }
#' @import graphics
NULL

roxygenize() works fine, with contents:

# Generated by roxygen2: do not edit by hand


if (TRUE) {
  import(methods)
} else {
  import(utils)
}
import(graphics)
import(stats)

Attempt to roxygenize() with existing NAMESPACE fails:

roxygen2::roxygenize()
# Setting `RoxygenNote` to "7.3.0.9000"
# Error in parse(path, keep.source = TRUE) : 
#   /tmp/myPkg/NAMESPACE:15:1: unexpected '}'
# 14: }
# 15: }
#     ^

Contents of NAMESPACE now:

# Generated by roxygen2: do not edit by hand


if (TRUE) {
  import(methods)
} else {
  import(utils)
}
  import(methods)
  import(utils)
if (TRUE) {
import(graphics)
import(stats)
}
} else {

[hadley]

And now on CRAN 😄