diff --git a/ble-decode.sh b/ble-decode.sh
index bed52df6..fa13699d 100755
--- a/ble-decode.sh
+++ b/ble-decode.sh
@@ -1582,7 +1582,7 @@ function ble-decode-byte+UTF-8 {
   local mode="$_ble_decode_byte__utf_8__mode"
   local byte="$1"
   local cha0= char=
-  (('
+  ((
     byte&=0xFF,
     (mode!=0&&(byte&0xC0)!=0x80)&&(
       cha0=ble_decode_Erro|code,mode=0
@@ -1621,7 +1621,7 @@ function ble-decode-byte+UTF-8 {
         )
       )
     )
-  '))
+  ))
 
   _ble_decode_byte__utf_8__code="$code"
   _ble_decode_byte__utf_8__mode="$mode"
diff --git a/ble-edit.sh b/ble-edit.sh
index e16ebcc7..555bf557 100755
--- a/ble-edit.sh
+++ b/ble-edit.sh
@@ -144,7 +144,7 @@ function .ble-text.c2w+emacs {
   #   なので ret に予め適当な値を設定しておく事にする。
   ret=1
 
-  (('
+  ((
     code<0xA0?(
       ret=1
     ):(0x3100<=code&&code<0xA4D0||0xAC00<=code&&code<0xD7A4?(
@@ -177,7 +177,7 @@ function .ble-text.c2w+emacs {
         ret=0x01<=al&&al<0x61||0xE0<=al&&al<=0xE7?2:1
       ):(ret=1))))))))))
     )))
-  '))
+  ))
 
   [[ $tIndex ]] || return 0
 
@@ -2276,10 +2276,10 @@ function ble-edit+insert-string {
 
   local dx="${#ins}"
   _ble_edit_str.replace _ble_edit_ind _ble_edit_ind "$ins"
-  (('
+  ((
     _ble_edit_mark>_ble_edit_ind&&(_ble_edit_mark+=dx),
     _ble_edit_ind+=dx
-  '))
+  ))
   _ble_edit_mark_active=
 }
 function ble-edit+self-insert {