From 068b8fd730d75ed4dd985a831d8635b25230bc9d Mon Sep 17 00:00:00 2001
From: John D Pell <John+git@gaelicWizard.net>
Date: Fri, 10 Sep 2021 12:13:22 -0700
Subject: [PATCH] lib/helpers: new functions `_bash_it_history_auto_*()`

Two new functions `_bash_it_history_auto_save()` and `_bash_it_history_auto_load()`, which append new history to disk and load new history from disk, respectively.

See bash-it/bash-it#1595 for discussion.
---
 lib/helpers.bash | 42 ++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 40 insertions(+), 2 deletions(-)

diff --git a/lib/helpers.bash b/lib/helpers.bash
index 469d55f100..2930a5d251 100644
--- a/lib/helpers.bash
+++ b/lib/helpers.bash
@@ -954,6 +954,44 @@ function safe_append_preexec {
 	fi
 }
 
-function _save-and-reload-history() {
-	[[ ${autosave:-0} -eq 1 ]] && history -a && history -c && history -r
+function _save-and-reload-history()
+{
+	[[ ${autosave:-${HISTORY_AUTOSAVE:-0}} -eq 1 ]] && local HISTCONTROL="${HISTCONTROL:-}${HISTCONTROL:+:}autoshare"
+	_bash_it_history_auto_save && _bash_it_history_auto_load
+}
+
+function _bash_it_history_auto_save()
+{
+	case $HISTCONTROL in
+	*'noauto'*|*'autoload'*)
+		: # Do nothing, as configured.
+		;;
+	*'auto'*)
+		# Append new history from this session to the $HISTFILE
+		history -a
+		;;
+	*)
+		: # Do nothing, default.
+		;;
+	esac
+}
+
+function _bash_it_history_auto_load()
+{
+	case $HISTCONTROL in
+	*'noauto'*|*'autosave'*)
+		: # Do nothing, as configured.
+		;;
+	*'autoloadnew'*)
+		# Read new entries from $HISTFILE
+		history -n
+		;;
+	*'auto'*)
+		# Blank in-memory history, then read entire $HISTFILE fresh from disk.
+		history -c && history -r
+		;;
+	*)
+		: # Do nothing, default.
+		;;
+	esac
 }