POSTIN

/bin/sh

if [ -x /usr/bin/update-menus ]; then /usr/bin/update-menus || true ; fi 

if [ -x /usr/bin/gtk-update-icon-cache ]; then 
/usr/bin/gtk-update-icon-cache --force --quiet /usr/share/icons/hicolor || true; fi 
/usr/sbin/update-alternatives --install /etc/timidity/timidity.cfg timidity.cfg /etc/timidity/timidity-custom.cfg 10

POSTUN

/bin/sh

if [ "$1" = "0" -a -x /usr/bin/update-menus ]; then /usr/bin/update-menus || true ; fi 

if [ -x /usr/bin/gtk-update-icon-cache -a -r /usr/share/icons/hicolor/index.theme ]; then 
/usr/bin/gtk-update-icon-cache --force --quiet /usr/share/icons/hicolor || true ; fi 
if [ "$1" = "0" ]; then
/usr/sbin/update-alternatives --remove timidity.cfg /etc/timidity/timidity-custom.cfg
fi

Triggers

TiMidity++ <= 2.13.2-22mdv

/bin/sh

/usr/sbin/update-alternatives --install /etc/timidity/timidity.cfg timidity.cfg /etc/timidity/timidity-custom.cfg 10