missing newline separator between json log records

[brooklynbagel]

When using the json_log_layout layout for structured logging, the records are not separated by a newline or any other separator.

tmp_log <- tempfile()

logger <- logger(appenders = file_appender(file = tmp_log, layout = json_log_layout()))

info(logger, "hungry heart")
info(logger, "everybody want to rule the world")
info(logger, "life during wartime")

readLines(tmp_log)
#> Warning in readLines(tmp_log) :
  incomplete final line found on '/var/folders/gk/tqr6bd9x5kg4nx12mzy20cww0000gp/T//RtmpYgWnwC/file50109fcb8dc'
#> [1] "{\"message\":\"hungry heart\",\"level\":\"INFO\",\"time\":\"2024-06-01T18:53:29Z\"}{\"message\":\"everybody want to rule the world\",\"level\":\"INFO\",\"time\":\"2024-06-01T18:53:29Z\"}{\"message\":\"life during wartime\",\"level\":\"INFO\",\"time\":\"2024-06-01T18:53:29Z\"}"

The expected output should look like:

#> [1] "{\"message\":\"hungry heart\",\"level\":\"INFO\",\"time\":\"2024-06-01T18:53:29Z\"}"
#> [2] "{\"message\":\"everybody want to rule the world\",\"level\":\"INFO\",\"time\":\"2024-06-01T18:53:29Z\"}"
#> [3] "{\"message\":\"life during wartime\",\"level\":\"INFO\",\"time\":\"2024-06-01T18:53:29Z\"}"

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