+# {{{ check for version/system
+# check for versions (compatibility reasons)
+is4(){
+ [[ $ZSH_VERSION == <4->* ]] && return 0
+ return 1
+}
+
+is41(){
+ [[ $ZSH_VERSION == 4.<1->* || $ZSH_VERSION == <5->* ]] && return 0
+ return 1
+}
+
+is42(){
+ [[ $ZSH_VERSION == 4.<2->* || $ZSH_VERSION == <5->* ]] && return 0
+ return 1
+}
+
+is43(){
+ [[ $ZSH_VERSION == 4.<3->* || $ZSH_VERSION == <5->* ]] && return 0
+ return 1
+}
+
+#f1# Checks whether or not you're running grml
+isgrml(){
+ [[ -f /etc/grml_version ]] && return 0
+ return 1
+}
+
+#f1# Checks whether or not you're running a grml cd
+isgrmlcd(){
+ [[ -f /etc/grml_cd ]] && return 0
+ return 1
+}
+
+if isgrml ; then
+#f1# Checks whether or not you're running grml-small
+ isgrmlsmall() {
+ [[ ${${${(f)"$(</etc/grml_version)"}%% *}##*-} == 'small' ]] && return 0 ; return 1
+ }
+else
+ isgrmlsmall() { return 1 }
+fi
+
+#f1# are we running within an utf environment?
+isutfenv() {
+ case "$LANG $CHARSET $LANGUAGE" in
+ *utf*) return 0 ;;
+ *UTF*) return 0 ;;
+ *) return 1 ;;
+ esac
+}
+
+# check for user, if not running as root set $SUDO to sudo
+(( EUID != 0 )) && SUDO='sudo' || SUDO=''
+
+# change directory to home on first invocation of zsh
+# important for rungetty -> autologin
+# Thanks go to Bart Schaefer!
+isgrml && checkhome() {
+ if [[ -z "$ALREADY_DID_CD_HOME" ]] ; then
+ export ALREADY_DID_CD_HOME=$HOME
+ cd
+ fi
+}
+
+# check for zsh v3.1.7+
+
+if ! [[ ${ZSH_VERSION} == 3.1.<7->* \
+ || ${ZSH_VERSION} == 3.<2->.<->* \
+ || ${ZSH_VERSION} == <4->.<->* ]] ; then
+
+ printf '-!-\n'
+ printf '-!- In this configuration we try to make use of features, that only\n'
+ printf '-!- require version 3.1.7 of the shell; That way this setup can be\n'
+ printf '-!- used with a wide range of zsh versions, while using fairly\n'
+ printf '-!- advanced features in all supported versions.\n'
+ printf '-!-\n'
+ printf '-!- However, you are running zsh version %s.\n' "$ZSH_VERSION"
+ printf '-!-\n'
+ printf '-!- While this *may* work, it might as well fail.\n'
+ printf '-!- Please consider updating to at least version 3.1.7 of zsh.\n'
+ printf '-!-\n'
+ printf '-!- DO NOT EXPECT THIS TO WORK FLAWLESSLY!\n'
+ printf '-!- If it does today, you'\''ve been lucky.\n'
+ printf '-!-\n'
+ printf '-!- Ye been warned!\n'
+ printf '-!-\n'
+
+ function zstyle() { : }
+fi
+
+# }}}
+