Messages being truncated

[mike-lawrence]

I'm looking at using loggr in a scenario where I'm creating new processes using system2(command = "Rscript" , args = c('--vanilla','my_script.R'), stdout = stdout_file, stderr = stderr_file, wait = FALSE), where I use loggr inside the script my_script. However, when I compare the log file to the stderr file, the loggr file seems to have truncated the messages. For example, a stderr file might have the contents:

Warning messages:
1: There were 38 divergent transitions after warmup. Increasing adapt_delta above 0.8 may help. See
http://mc-stan.org/misc/warnings.html#divergent-transitions-after-warmup 
2: Examine the pairs() plot to diagnose sampling problems

But the log file only has:

There were 
Examine the pairs() plot to diagnose sampling problems

All I'm doing to activate loggr in my_script.R is:

library(loggr)
my_formatter <- function(event) event$message
log_file(log_file_name,.formatter = my_formatter,subscriptions=c('message', 'warning','stop'))

Any idea what I should be doing instead to avoid truncation of those messages?

[mike-lawrence]

dunno if it helps or not, but here's the code used by the package whose functions I'm using in my_script.R:

warning("There were ", n_d, " divergent transitions after warmup.",
    " Increasing adapt_delta above ", ad, " may help. See\n",
    "http://mc-stan.org/misc/warnings.html#divergent-transitions-after-warmup"
    , call. = FALSE)

So it looks like loggr is only catching the first argument to warning()?

[mike-lawrence]

I think the problem is in notify_loggr where you only pass the first element of args to .makeMessage.

[mike-lawrence]

ok, think I fixed this, pull request here: #34