better fix : copy wordlist in kuysu gaiwan before removing =s

Author: chimay

autoload/wheel/kyusu.vim

@@ -186,7 +186,7 @@ fun! wheel#kyusu#gaiwan (wordlist)
 	" Special keywords :
 	"   - =s[selection] enable selection only filter
 	"   - !=s[selection] enable non-selection only filter
-	let wordlist = a:wordlist
+	let wordlist = copy(a:wordlist)
 	let linelist = copy(b:wheel_lines)
 	if empty(wordlist)
 		let filtered_indexes = wheel#chain#rangelen(linelist)

autoload/wheel/teapot.vim

@@ -13,8 +13,8 @@ endfun
 
 fun! wheel#teapot#is_filtered ()
 	" Whether mandala is filtered
-	"return ! empty(b:wheel_filter.words)
-	return ! empty(b:wheel_filter.indexes)
+	"return ! empty(b:wheel_filter.indexes)
+	return ! empty(b:wheel_filter.words)
 endfun
 
 fun! wheel#teapot#first_data_line ()