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+#!/bin/bash
+#
+# A Drush wrapper.
+#
+# Legacy drush is based on system-wide installs, while recent versions support only
+# installations using composer:
+#
+# * https://docs.drush.org/en/master/install/
+# * https://docs.drush.org/en/8.x/install/
+#
+# This simple wrapper makes a system to support both at the same time by using a
+# simple heuristic: if there's a `vendor/drush` starting from the current folder,
+# then it uses drush-launcher, falling back to drush legacy otherwise.
+
+# Parameters
+BIN="/usr/local/bin"
+
+# Set drush implementation
+if [ ! -d "vendor/drush" ]; then
+  DRUSH="$BIN/drush-legacy"
+else
+  DRUSH="$BIN/drush-launcher"
+fi
+
+# Dispatch
+$DRUSH "$@"