Enable updating plugins via cli executable

bindings/update_plugins

@@ -0,0 +1,47 @@
+#!/usr/bin/env bash
+
+# Tmux key-binding script.
+# Scripts intended to be used via the command line are in `bin/` directory.
+
+# This script:
+# - shows a list of installed plugins
+# - starts a prompt to enter the name of the plugin that will be updated
+
+CURRENT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+SCRIPTS_DIR="$CURRENT_DIR/../scripts"
+
+source "$SCRIPTS_DIR/shared_functions.sh"
+
+display_plugin_update_list() {
+	local plugins="$(shared_get_tpm_plugins_list)"
+	echo_message "Installed plugins:"
+	echo_message ""
+
+	for plugin in $plugins; do
+		# displaying only installed plugins
+		if plugin_already_installed "$plugin"; then
+			local plugin_name="$(shared_plugin_name "$plugin")"
+			echo_message "  $plugin_name"
+		fi
+	done
+
+	echo_message ""
+	echo_message "Type plugin name to update it."
+	echo_message ""
+	echo_message "- \"all\" - updates all plugins"
+	echo_message "- ENTER - cancels"
+}
+
+update_plugin_prompt() {
+	tmux command-prompt -p 'plugin update:' " \
+		send-keys C-c; \
+		run-shell '$SCRIPTS_DIR/update_plugin_prompt_handler.sh %1'"
+}
+
+main() {
+	reload_tmux_environment
+	shared_set_tpm_path_constant
+	display_plugin_update_list
+	update_plugin_prompt
+}
+main