callr 3.2.0 2019-03-15

  • r(), rcmd() and rscript() can now redirect the standard error of the subprocess its standard output. This allows to keep them correctly interleaved. For this, you need to either set the stderr argument to the special string "2>&1", or to the same output file as specified for stdout.

  • r(), rcmd() and rscript() now pass ... arguments to processx::run(). r_bg() and rcmd_bg() pass ... arguments to the processx::process constructor. For r_process, rcmd_process and rscript_process extra arguments can be specified as options$extra, these are also passed to the processx::process constructor (#100).

callr 3.1.1 2018-12-21

  • r(), r_bg(), etc. now handle messages from the cliapp package properly. They used to make the R session exit.

  • Better default for the repos option in callr subprocesses. callr no longer creates duplicate “CRAN” entries. By default the new default_repos() function is used to set repos in the subprocess.

callr 3.1.0 2018-12-10

  • New rscript() function and rscript_process class to execute R scripts via Rscript (#40, #81).

  • Library paths are now correctly set up for system() (and similar) calls from the callr subprocesses (#83, #84).

  • Pass options("repos") to the child process as is, without checking. Closes #82.

  • r_session$run_with_output() now returns an S3 object with class callr_session_result.

  • r_session$run*() handle interrupts properly. It tries to interrupt the background process fist, kills it if it is not interruptable, and then re-throws the interrupt condition, going back to the top level prompt if the re-thrown condition is un-caught.

callr 3.0.0 2018-08-24

  • New r_session class: a background R session you can send commands to (#56).

  • Rewrote passing the library path to the subprocess (#73, #75)

  • Retain names of the repos option (#67, @jennybc)

callr 2.0.4 2018-05-15

  • pkgdown web site at (#52, #53).

  • callr users .Renviron files now (and R_ENVIRON_USER as well), but overrides the library path, as requested in r(), etc. (#30).

  • callr now handles the case when the subprocess calls quit().

  • callr now uses the processx package, instead of embedded code, to create and control processes.

callr 2.0.3 2018-04-11

  • The default behavior on error can be set now with the callr.error option.

  • Better error message if the child R process crashes or gets killed. (#41)

  • r_bg and rcmd_bg now have the supervise option (#45).

callr 2.0.2 2018-02-11

callr 2.0.1 2018-01-30

  • Fix compilation issues on CRAN’s Solaris machine

  • Fix a test failure on CRAN’s macOS machine

callr 2.0.0 2018-01-28

  • Run R or R CMD * in the background, see r_bg(), rcmd_bg(), and also r_process and rcmd_process

  • The defaults for r() are safer now, the match the defaults of r_safe(). r_safe() is kept for compatibility. r_copycat() has the old r() defaults.

  • The defaults for rcmd() are safer now, the match the defaults of rcmd_safe(). rcmd_safe() is kept for compatibility. rcmd_copycat() has the old rcmd() defaults.

  • Support block callbacks, in addition to line callbacks. Block callbacks are called for arbitrary chunks of output, even without a newline

  • Add spinner argument to show a spinner in r() or rcmd()

  • Support timeouts, via the timeout argument

  • Fix bug when stdout and stderr are redirected to the same file

  • rcmd_safe_env() to allow extending the environment variables set in safe mode

  • rcmd() gets a fail_on_status argument

  • rcmd() gets an echo argument to potentially show the command to be run on the screen (#15)

  • rcmd() gets a wd argument to set the working directory

callr 1.0.0 2016-06-18

First public release.