From 3304dfcbfe020cd21b6525fde8319e26c3f5b3a1 Mon Sep 17 00:00:00 2001
From: Axel Kohlmeyer <akohlmey@gmail.com>
Date: Tue, 16 Mar 2021 13:31:56 -0400
Subject: [PATCH] don't output null pointers as strings with fmtlib in variable
 info list

---
 src/info.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/info.cpp b/src/info.cpp
index 27ed8c1c5b..fadf87292a 100644
--- a/src/info.cpp
+++ b/src/info.cpp
@@ -655,7 +655,7 @@ void Info::command(int narg, char **arg)
       if ((style[i] != LOOP) && (style[i] != ULOOP))
         ndata = input->variable->num[i];
       for (int j=0; j < ndata; ++j)
-        fmt::print(out," {}",data[i][j]);
+        if (data[i][j]) fmt::print(out," {}",data[i][j]);
       fputs("\n",out);
     }
   }