From 78de57aeb5810043572fe6c51e39d47b36b968e3 Mon Sep 17 00:00:00 2001
From: John D Pell <John+git@gaelicWizard.net>
Date: Mon, 26 Jul 2021 12:17:24 -0700
Subject: [PATCH] lib: avoid duplicate inclusion
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For lib/log and lib/utilities, add double-inclusion protection as we're so early in startup that these are loaded explicitly rather than through `reloader.sh` or even the early lib load loop.
This *slightly* improves performance, but alsö improves debugging by reducing surface area.
---
 lib/log.bash       | 11 ++++++++++-
 lib/utilities.bash |  7 +++++++
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/lib/log.bash b/lib/log.bash
index 6bc53a12..f9769d60 100644
--- a/lib/log.bash
+++ b/lib/log.bash
@@ -1,4 +1,13 @@
-#!/usr/bin/env bash
+# shellcheck shell=bash
+#
+# A collection of logging functions.
+
+# Avoid duplicate inclusion
+if [[ -n "${__bash_it_lib_log:-}" ]]
+then
+    return 0
+fi
+__bash_it_lib_log="loaded"
 
 export BASH_IT_LOG_LEVEL_ERROR=1
 export BASH_IT_LOG_LEVEL_WARNING=2
diff --git a/lib/utilities.bash b/lib/utilities.bash
index 575787d8..33e7aa8b 100644
--- a/lib/utilities.bash
+++ b/lib/utilities.bash
@@ -2,6 +2,13 @@
 #
 # A collection of reusable functions.
 
+# Avoid duplicate inclusion
+if [[ -n "${__bash_it_lib_utilities:-}" ]]
+then
+    return 0
+fi
+__bash_it_lib_utilities="loaded"
+
 ###########################################################################
 # Generic utilies
 ###########################################################################