U key binding shows a list of installed plugins

scripts/update_plugin.sh

@@ -0,0 +1,34 @@
+#!/usr/bin/env bash
+
+# when invoked with `prefix + U` 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 "${BASH_SOURCE[0]}" )" && pwd )"
+
+source "$CURRENT_DIR/shared_functions.sh"
+
+display_plugin_update_list() {
+	local plugins="$(shared_get_tpm_plugins_list)"
+	for plugin in $plugins; do
+		# displaying only installed plugins
+		if plugin_already_cloned "$plugin"; then
+			echo_message "$plugin"
+		fi
+	done
+}
+
+update_plugin_prompt() {
+	tmux command-prompt -p 'plugin update:' " \
+		send-keys C-m; \
+		run-shell '$CURRENT_DIR/update_plugin.sh %1'"
+}
+
+
+main() {
+	reload_tmux_environment
+	shared_set_tpm_path_constant
+	display_plugin_update_list
+	update_plugin_prompt
+}
+main