prerm is in emacs25-bin-common 25.2+1-6.
This file is a maintainer script. It is executed when installing (*inst) or removing (*rm) the package.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 | #!/bin/sh
set -e
FLAVOR=emacs25
MAJOR=25
MINOR=2
FULL=25.2
ALTERNATIVES="ctags ebrowse emacsclient etags"
# update-alternatives on things that collide with xemacs, other editors
if [ "$1" != "upgrade" ]
then
for i in ${ALTERNATIVES}
do
update-alternatives --remove $i /usr/bin/$i.${FLAVOR}
done
fi
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