diff --git a/apacheconfig b/apacheconfig
index 6b7aee0..0d24d46 100755
--- a/apacheconfig
+++ b/apacheconfig
@@ -127,12 +127,9 @@ OPTIONS AVANCEES
 function __templatectl_display_help() { display_help; }
 
 # Valeurs par défaut des variables de template
-setx host=myhost
-hostname="${host%%.*}"
 DEFAULT_TEMPLATE_VARS=(
-    host="$host"
-    hostname="$hostname"
-    aliases="$hostname"
+    hostname= aliases= # mettre ces variables AVANT host
+    host=
     admin=supervision-gdrsi@listes.univ-reunion.fr
     certsdir=renater
     caname=terena.crt
@@ -170,14 +167,23 @@ function update_var() {
     # hostname.
     local __orig_value="${!1}"
     array_contains DYNAMIC_VARS "$1" || array_addu TEMPLATE_VARS "$1"
+
+    # Valeurs par défaut
+    case "$1" in
+    host) [ -n "$2" ] || set -- "$1" "$(myhost)";;
+    esac
+
+    # Mettre à jour la variable
     setv "$1" "$2"
 
+    # Mettre à jour des variables dépendantes
     local __update_aliases
     case "$1" in
     host)
+        # attention à ne pas créer de boucle infinies :-)
         [ "$aliases" == "$hostname" ] && __update_aliases=1
-        hostname="${host%%.*}"
-        [ -n "$__update_aliases" ] && aliases="$hostname"
+        update_var hostname "${host%%.*}"
+        [ -n "$__update_aliases" ] && update_var aliases "$hostname"
         ;;
     esac
 
@@ -268,7 +274,7 @@ if [ -n "$__write_vars" ]; then
     [ -f "$__apacheconfig_vars" ] &&
     die "Refus d'écraser le fichier existant $(ppath "$__apacheconfig_vars")"
 
-    >"$__apacheconfig_vars"
+    echo "# -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8" >"$__apacheconfig_vars"
     echo "__template_vars=(" >>"$__apacheconfig_vars"
     for __var in "${TEMPLATE_VARS[@]}"; do
         echo_setv "$__var=${!__var}" >>"$__apacheconfig_vars"
diff --git a/runsconfig b/runsconfig
index c5e6eea..cb93f31 100755
--- a/runsconfig
+++ b/runsconfig
@@ -50,34 +50,33 @@ function __templatectl_display_help() { display_help; }
 set_defaults runs
 
 # essayer de déterminer l'hôte à partir du répertoire courant
-host=
+DEFAULT_HOST=
 array_split __hostsdirs "$RUNSHOSTSPATH" :
 setx __cwd=pwd
 for __hostsdir in "${__hostsdirs[@]}"; do
     setx __hostsdir=abspath "$__hostsdir"
     if [ "${__cwd#$__hostsdir/}" != "$__cwd" ]; then
-        host="${__cwd#$__hostsdir/}"
-        host="${host%%/*}"
+        DEFAULT_HOST="${__cwd#$__hostsdir/}"
+        DEFAULT_HOST="${DEFAULT_HOST%%/*}"
         break
     fi
 done
 
 # sinon lire l'environnement
-if [ -z "$host" ]; then
+if [ -z "$DEFAULT_HOST" ]; then
     runs_initdomains
-    setx host=myhost
-    splithost "$host" hostname domain
-    if [ -z "$domain" ]; then
-        host="$(runs_find_host "$host")"
-        splithost "$host" hostname domain
+    setx DEFAULT_HOST=myhost
+    splithost "$DEFAULT_HOST" __hostname __domain
+    if [ -z "$__domain" ]; then
+        DEFAULT_HOST="$(runs_find_host "$DEFAULT_HOST")"
+        splithost "$DEFAULT_HOST" __hostname __domain
     fi
-    [ -n "$domain" ] || host="$(runs_add_domain "$host")"
+    [ -n "$__domain" ] || DEFAULT_HOST="$(runs_add_domain "$DEFAULT_HOST")"
 fi
 
-hostname="${host%%.*}"
 DEFAULT_TEMPLATE_VARS=(
-    host="$host"
-    hostname="$hostname"
+    hostname= # mettre cette variables AVANT host
+    host=
 )
 
 TEMPLATE_VARS=()
@@ -87,10 +86,18 @@ function update_var() {
     # hostname.
     local __orig_value="${!1}"
     array_addu TEMPLATE_VARS "$1"
+
+    # Valeurs par défaut
+    case "$1" in
+    host) [ -n "$2" ] || set -- "$1" "$(myhost)";;
+    esac
+
+    # Mettre à jour la variable
     setv "$1" "$2"
 
+    # Mettre à jour des variables dépendantes
     case "$1" in
-    host) hostname="${host%%.*}";;
+    host) update_var hostname "${host%%.*}";;
     esac
 
     [ "$2" != "$__orig_value" ]
@@ -137,7 +144,7 @@ if [ -n "$__write_vars" ]; then
     [ -f "$__runsconfig_vars" ] &&
     die "Refus d'écraser le fichier existant $(ppath "$__runsconfig_vars")"
 
-    >"$__runsconfig_vars"
+    echo "# -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8" >"$__runsconfig_vars"
     echo "__template_vars=(" >>"$__runsconfig_vars"
     for __var in "${TEMPLATE_VARS[@]}"; do
         echo_setv "$__var=${!__var}" >>"$__runsconfig_vars"