Add ghe-rsync wrapper command, silence vanished file warnings

Author: rtomayko

libexec/ghe-rsync

@@ -0,0 +1,22 @@
+#!/usr/bin/env bash
+#/ Usage: ghe-rsync
+#/ Run rsync with silenced vanished file warnings (non-critical).
+#
+# Based on the rsync-no-vanished support script included with rsync:
+# https://bugzilla.samba.org/show_bug.cgi?id=10356
+
+set -o pipefail
+
+# Filter vanished file warnings from stderr. The complex redirections are
+# necessary to filter stderr while also keeping stdout and stderr separated.
+IGNOREOUT='^(file has vanished: |rsync warning: some files vanished before they could be transferred)'
+(rsync "${@}" 3>&1 1>&2 2>&3 3>&- |
+  (egrep -v "$IGNOREOUT" || true)) 3>&1 1>&2 2>&3 3>&-
+res=$?
+
+# rsync exits with 24 when vanished files are detected.
+if [ $res = 24 ]; then
+    res=0
+fi
+
+exit $res