From d63bc6849c2a3b6ff0b909390488cb423208d61d Mon Sep 17 00:00:00 2001
From: Rob Landley <rob@landley.net>
Date: Thu, 14 Jun 2018 14:10:17 -0500
Subject: Change do_lines() semantics to end with a callback(0,0) to indicate
 EOF, adjusting existing users.

---
 toys/posix/cut.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'toys/posix/cut.c')

diff --git a/toys/posix/cut.c b/toys/posix/cut.c
index 2676d932..f61073f1 100644
--- a/toys/posix/cut.c
+++ b/toys/posix/cut.c
@@ -70,14 +70,15 @@ int unicolumns(char *start, unsigned columns)
   return ss-start;
 }
 
-
 // Apply selections to an input line, producing output
 static void cut_line(char **pline, long len)
 {
   unsigned *pairs = (void *)toybuf;
-  char *line = *pline;
+  char *line;
   int i, j;
 
+  if (!pline) return;
+  line = *pline;
   if (len && line[len-1]=='\n') line[--len] = 0;
 
   // Loop through selections
-- 
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