format one entry per line if stdout is not a tty

1 files changed, 5 insertions, 0 deletions

diff --git a/ls.c b/ls.c
index feeccb7..d15288f 100644
--- a/ls.c
+++ b/ls.c
@@ -17,6 +17,7 @@
  *
  */
 
+#define _XOPEN_SOURCE 700
 #include <stdio.h>
 #include <sys/stat.h>
 #include <unistd.h>
@@ -541,6 +542,10 @@ main (int argc, char **argv)
         return 1;
     }
   }
+
+  if (!isatty(STDOUT_FILENO)) {
+    display = SINGLE;
+  }
   
   if (optind >= argc) {
     strcpy(dirlist[0].path, ".");