Avoid confusion with -I from ffoom and ffdoc

bin/fff

@@ -6,15 +6,15 @@ ffoo import pretty
 
 
 usage() {
-    usage_is "[-I|--include module] function [args...]"
+    usage_is "[-M|--module module] function [args...]"
 }
 
-includes=""
+modules=""
 
 while true; do case $1 in
     -d|--debug)     FFOO_DEBUG=true;       shift   ;;
     -v|--verbose)   FFOO_VERBOSE=true;     shift   ;;
-    -I|--include)   includes=$includes:$2; shift 2 ;;
+    -M|--module)    modules=$modules:$2;   shift 2 ;;
     "")             usage                          ;;
     *)              fffun="$1";            shift;
                                            break   ;;
@@ -24,15 +24,15 @@ case $fffun in
     *.*)
         module=${fffun%.*}
         fffun=${fffun#$module.}
-        includes=$includes:$module
+        modules=$modules:$module
         ;;
 esac
 
 
-debug -v includes module fffun
+debug -v modules module fffun
 debug "\$@='$@'"
 
-for i in $(tr ":" " " <<<"$includes"); do
+for i in $(tr ":" " " <<<"$modules"); do
     ffoo import $i
 done