make: update

make

 #!/bin/sh
 
-WATCHSOURCE="**/*.rst *.rst"
+shopt -s globstar
+WATCHSOURCE="**/*.rst"
 MAKEFUNC=makeindex
 
 function makeindex() {
@@ -11,7 +12,6 @@ function makeindex() {
 
 while true ; do
     inotifywait -e modify $WATCHSOURCE -qq
-    WATCHSOURCE="**/*.rst *.rst"
     $MAKEFUNC
 done