parse_args: usage peut maintenant être sur plusieurs lignes

bash/src/base.args.sh

@@ -235,25 +235,34 @@ function __parse_args() {
         if [ -n "$__DESC" ]; then
             help="$help: $__DESC"
         fi
+
+        local prefix="    $MYNAME "
+        local -a usages; local usage="$__USAGE"
+        [ -n "$usage" ] || usage="[options]"
+        IFS=$'\n' read -a usages -d "" <<<"$usage"
         help="$help
 
-USAGE
-    $MYNAME"
-        if [ -n "$__USAGE" ]; then
-            help="$help $__USAGE"
-        else
-            help="$help [options]"
-        fi
-        help="$help
+USAGE"
+        for usage in "${usages[@]}"; do
+            [ -n "$usage" ] || continue
+            help="$help
+$prefix$usage"
+        done
 
-OPTIONS"
         set -- "${__DEFS[@]}"
+        local first=1
         while [ $# -gt 0 ]; do
             case "$1" in
             +) shift; continue;;
             -) shift; continue;;
             -*) IFS=, read -a __defs <<<"$1"; shift;;
             esac
+            if [ -n "$first" ]; then
+                first=
+                help="$help
+
+OPTIONS"
+            fi
             # est-ce que l'option prend un argument?
             __witharg=
             for __def in "${__defs[@]}"; do