Hi Julien, Julien Cubizolles <[email protected]> writes:
> From what I understand Emacs outputs the whole *Messages* buffer to > stdout. So there is nothing the shell can do to sort error messages from > information messages. Is that right ? Hrm, you're not quite correct, but I'm not sure it actually matters. From (info "(emacs) Initial Options"): > `-batch' > `--batch' > Run Emacs in "batch mode". Batch mode is used for running > programs written in Emacs Lisp from shell scripts, makefiles, and > so on. To invoke a Lisp program, use the `-batch' option in > conjunction with one or more of `-l', `-f' or `--eval' (*note > Action Arguments::). *Note Command Example::, for an example. > In batch mode, Emacs does not display the text being edited, and > the standard terminal interrupt characters such as `C-z' and `C-c' > have their usual effect. Emacs functions that normally print a > message in the echo area will print to either the standard output > stream (`stdout') or the standard error stream (`stderr') instead. > (To be precise, functions like `prin1', `princ' and `print' print > to `stdout', while `message' and `error' print to `stderr'.) > Functions that normally read keyboard input from the minibuffer > take their input from the terminal's standard input stream > (`stdin') instead. etc. So which file descriptor emacs --batch sends printed output to does actually depend on the function being called. And looking at the source of gnus-agent, it does look like functions like `signal' and `error' are consistently used as they should be, for actual network errors--which is good. However, `message' is also used frequently, e.g. for the "Checking new news..." in `gnus-group-check-new-news.' So it's not guaranteed that stderr will only contain errors. So, you might actually be better off either redirecting all output to /dev/null (as the example in (info "(gnus) Batching Agents") does), or else redirect to a log file. -- Regards, WGG
pgpNlXo7316dJ.pgp
Description: PGP signature
_______________________________________________ info-gnus-english mailing list [email protected] https://lists.gnu.org/mailman/listinfo/info-gnus-english
