From f71ea5f3ea469489fc979ee3c0cd2622d011befd Mon Sep 17 00:00:00 2001
From: Junegunn Choi <junegunn.c@gmail.com>
Date: Wed, 22 Jul 2015 13:45:38 +0900
Subject: Add test cases for header and fix corner cases

---
 src/options.go | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'src/options.go')

diff --git a/src/options.go b/src/options.go
index d8b2bd87..17df2210 100644
--- a/src/options.go
+++ b/src/options.go
@@ -784,6 +784,10 @@ func parseOptions(opts *Options, allArgs []string) {
 		}
 	}
 
+	if opts.HeaderLines < 0 {
+		errorExit("header lines must be a non-negative integer")
+	}
+
 	// Change default actions for CTRL-N / CTRL-P when --history is used
 	if opts.History != nil {
 		if _, prs := keymap[curses.CtrlP]; !prs {
-- 
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