--preset: disallow relative file path #218

x11docker

@@ -281,8 +281,8 @@ Miscellaneous:
                        You can move the created .desktop file to 
                        ~/.local/share/applications to get a menu entry.
      --license         Show license of x11docker (MIT) and exit.
-     --preset FILE     Read a set of predefined options from file FILE.
-                       FILE searched in directory /etc/x11docker/preset,
+     --preset FILE     Read a set of predefined options stored in file FILE.
+                       FILE is searched in directory /etc/x11docker/preset,
                        in directory ~/.config/x11docker/preset or absolute.
                        Multiple lines in FILE are allowed. 
      
@@ -7974,7 +7974,7 @@ parse_options() {               # parse cli options
                               Presetfile=""
                               [ -f "$Presetdirsystem/${2:-}" ] && Presetfile="$Presetdirsystem/${2:-}"
                               [ -f "$Presetdirlocal/${2:-}" ]  && Presetfile="$Presetdirlocal/${2:-}"
-                              [ -f "${2:-}" ]                  && Presetfile="${2:-}"
+                              [ -f "/${2:-}" ]                 && Presetfile="/${2:-}"
                               [ -f "$Presetfile" ]             || error "Option --preset: File not found: ${2:-}
   Searching in present working directory and in:
   $Presetdirlocal