Dear Adrian,
Here's my slightly modified version of your function, which serves my purpose:
------- snip -------
tryCatchWEM <- function (expr, capture = TRUE) {
toreturn <- list()
output <- withVisible(withCallingHandlers(
tryCatch(expr,
error = function(e) {
toreturn$error <<- e$message
NULL
}), warning = function(w) {
toreturn$warning <<- c(toreturn$warning, w$message)
invokeRestart("muffleWarning")
}, message = function(m) {
toreturn$message <<- paste(toreturn$message, m$message,
sep = "")
invokeRestart("muffleMessage")
}))
if (capture & output$visible) {
if (!is.null(output$value)) {
toreturn$result <- output$value
}
}
if (length(toreturn) > 0) {
return(toreturn)
}
}
------- snip -------
The two small modifications are to change the default of capture to TRUE and to
return output$value rather than capture.output(output$value). So a suggestion
would be to modify the capture argument to, say, capture=c("no", "output",
"value") and then something like
. . .
capture <- match.arg(capture)
. . .
if (capture == "output"){
toreturn$output <- capture.output(output$value)
} else if (capture == "value"){
toreturn$value <- output$value
}
. . .
Best,
John
On 2021-12-03, 1:56 PM, "R-devel on behalf of Adrian Dușa"
<r-devel-boun...@r-project.org on behalf of dusa.adr...@gmail.com> wrote:
On Fri, 3 Dec 2021 at 00:37, Fox, John <j...@mcmaster.ca> wrote:
> Dear Henrik, Simon, and Adrian,
>
> As it turns out Adrian's admisc::tryCatchWEM() *almost* does what I want,
> which is both to capture all messages and the result of the expression
> (rather than the visible representation of the result). I was easily able
> to modify tryCatchWEM() to return the result.
>
Glad it helps.
I would be happy to improve the function, should you send a reprex with the
desired final result.
Best wishes,
Adrian
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