I was testing -xeu vs. -vxeu on set -xeu set /var/lib/exim4/config.autogenerated cp $@ /tmp update-exim4.conf --verbose diff /tmp $@||: set update-exim4.conf.conf echo . $PWD/$@-jidanni > /tmp/$@ diff $@ /tmp
and no matter STDOUT or STDERR they gave the same results, there in emacs' *compilation* buffer.