"Save workspace image?" spam when running system(zip) functions

[kaibagley]

Hey,

Setup

OS: Windows 10
Emacs: 29.1 (build 2) 2023-08-02
ESS: 18.10.3snapshot

Issue

When running raster::KML, or utils::zip, the R buffer will suddenly print thousands of lines of:

Save workspace image? [y/n/c]: >

With no way to quit other than killing the R process in task manager.

What I've tried

I can see that raster::KML calls a function .zipKML, which then calls system(...), similar to utils::zip.

I've tried uninstalling 7zip, but same problem.
Even calling system("zip") with no other arguments causes the same issue.

This error only happens on Emacs/ESS, and not on Rstudio.

Thanks for any help!!!

[ppanko]

Having the same issue on Windows 11 with Emacs 27.1, ESS version 24.01.1 on a minimal config.

Calls involving system, Rcpp, rstan or brms all result in the R process printing "Save workspace image? [y/n/c/]" repeatedly and becoming unresponsive. This occurs both when sending lines to the process (e.g., ess-eval-region) and when evaluating a line directly in the inferior R buffer.

Attempts at debugging haven't resulted in anything; this behavior does not seem to be producing an error. The messages buffer offers no information either. Running the same code using Rstudio or RGui does not produce this issue.

[ppanko]

Toyed around with this issue some more today using both Emacs 27.1 and 29.1, ESS 20241216.1709, R 4.4.0 on Windows 11.

My minimal config:

(use-package ess
  :config
  (setq inferior-R-args "--vanilla --no-save")
  (setq ess-verbose t))

Code I am running:

library(Rcpp)

sourceCpp(
  code = "
  #include <Rcpp.h>
  using namespace Rcpp;
  // [[Rcpp::export]]
  int add_numbers(int a, int b) {
    return a + b;
  }"
)

With ess-eval-visibly at its default, running the lines above causes the process to terminate ("Process R finished at...") while 'nowait causes the process to hang indefinitely. The message and ESS buffers offer no clues.

R GUI and RStudio have no issues with the above code, as before.

Any help would be deeply appreciated.