Move awk instantiation after loading util functions.

ble.pp

@@ -1398,8 +1398,13 @@ function ble/init/check-environment {
   return 1
 fi
 
-# Note: src/util.sh で ble/util/assign を定義した後に呼び出される。
 _ble_bin_awk_type=
+## @fn ble/bin/awk/.instantiate
+##   Select the mplementation of ble/bin/awk.
+##
+##   @remarks This function relies on ble/util/assign (used directly or through
+##   ble/bin#get-path) and ble/is-function, so this is called in src/util.sh
+##   after ble/util/assign and ble/is-function are defined.
 function ble/bin/awk/.instantiate {
   local path q=\' Q="'\''" ext=1
 

src/util.sh

@@ -2501,9 +2501,6 @@ else
 fi
 
 
-# ble/bin/awk の初期化に ble/util/assign を使うので
-ble/bin/awk/.instantiate
-
 #
 # functions
 #
@@ -2528,6 +2525,9 @@ else
   }
 fi
 
+# ble/bin/awk の初期化に ble/util/assign と ble/is-function を使うので
+ble/bin/awk/.instantiate
+
 ## @fn ble/function#getdef function
 ##   @var[out] def
 ##