Pull extra/fish fish.install

fish.install

@@ -1,20 +1,14 @@
 post_install() {
-  if [ ! "`grep /usr/bin/fish etc/shells`" ]; then
-    echo "updating /etc/shells... done."
-    sed -i "s|/bin/bash|/bin/bash\n/usr/bin/fish|" etc/shells
-  fi
+  grep -qe '^/usr/bin/fish$' etc/shells || echo '/usr/bin/fish' >> etc/shells
+  grep -qe '^/bin/fish$' etc/shells || echo '/bin/fish' >> etc/shells
 }
 
 post_upgrade() {
-  post_install $1
+  post_install
 }
 
 pre_remove() {
-  echo -ne "updating /etc/shells... \n"
-  sed -i '/^\/usr\/bin\/fish/d' /etc/shells
+  sed -ri -e '\|^/usr/bin/fish$|d' -e '\|^/bin/fish$|d' etc/shells
 }
 
-op=$1
-shift
-
-$op $*
+# vim:set ts=2 sw=2 et: