UTF-8 path fails in older R versions, on Windows

[gaborcsardi]

This is R 3.6.3 on Windows 10.

  local_temp_dir()
  name <- "./\u00fa\u00e1\u00f6\u0151\u00e9.exe"
  # Older dir.create does not handle UTF-8 correctly
  if (getRversion() < "4.0.0") {
    dir.create(enc2native(name))
  } else {
    dir.create(name)
  }
  px <- get_tool("px")
  exe <- file.path(name, "px.exe")
  if (getRversion() < "4.0.0") {
    file.copy(px, enc2native(exe))
  } else {
    file.copy(px, exe)
  }
  out <- run(
    exe,
    c("out", "hello", "return", 10),
    error_on_status = FALSE
  )

#> Error in rethrow_call(c_processx_exec, command, c(command, args), stdin,  :
#>   Command './úáöoé.exe/px.exe' not found @win/processx.c:994 (processx_exec)
#> Type .Last.error.trace to see where the error occured

[gaborcsardi]

Closed by #265.