From 39a0c5ee38ba4131f3d27233c483211cc68fc7ec Mon Sep 17 00:00:00 2001
From: nhmall <nhmall@nethack.org>
Date: Thu, 10 Jun 2021 12:12:31 -0400
Subject: [PATCH] nethack --showpaths output tweak

Don't display a portable_device_path in --showpaths output if it is
empty or not being used.
---
 src/files.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/files.c b/src/files.c
index eff4e04fd..6e5869dca 100644
--- a/src/files.c
+++ b/src/files.c
@@ -4323,8 +4323,13 @@ reveal_paths(void)
     if (sysopt.portable_device_paths) {
         const char *pd = get_portable_device();
 
-        raw_printf("portable_device_paths (set in sysconf):");
-        raw_printf("    \"%s\"", pd);
+        /* an empty value for pd indicates that portable_device_paths
+           got set TRUE in a sysconf file other than the one containing
+           the executable; disregard it */
+        if (strlen(pd) > 0) {
+            raw_printf("portable_device_paths (set in sysconf):");
+            raw_printf("    \"%s\"", pd);
+	}
     }
 #endif