From 87a7e51c394c0e685dcbfe88fcfc792cc1d471af Mon Sep 17 00:00:00 2001
From: zugzug <lumber.bug@gmail.com>
Date: Thu, 17 Mar 2016 09:03:44 -0700
Subject: [PATCH] FIX make autolist work if PROMPT_COMMAND is blank

Before this change, autolist fails w/ the following error when PROMPT_COMMAND is
not set:

  -bash: PROMPT_COMMAND: line 0: syntax error near unexpected token `;'
  -bash: PROMPT_COMMAND: line 0: `;eval "na --prompt"'
---
 na.sh | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/na.sh b/na.sh
index 512597a..f268a71 100644
--- a/na.sh
+++ b/na.sh
@@ -302,5 +302,9 @@ WEEDTIME
 }
 
 if [[ $NA_AUTO_LIST_FOR_DIR -eq 1 ]]; then
-  echo $PROMPT_COMMAND | grep -v -q "na --prompt" && PROMPT_COMMAND="$PROMPT_COMMAND;"'eval "na --prompt"'
+  if [[ -z "$PROMPT_COMMAND" ]]; then
+    PROMPT_COMMAND="eval 'na --prompt'"
+  else
+    echo $PROMPT_COMMAND | grep -v -q "na --prompt" && PROMPT_COMMAND="$PROMPT_COMMAND;"'eval "na --prompt"'
+  fi
 fi