From 76ff0da4d2b3127bcdcb5053377da4602d45e139 Mon Sep 17 00:00:00 2001
From: Glenn L McGrath <bug1@ihug.co.nz>
Date: Mon, 23 Dec 2002 11:54:56 +0000
Subject: Support the obsolete '+' option

---
 coreutils/tail.c | 23 +++++++++++++++++++----
 1 file changed, 19 insertions(+), 4 deletions(-)

(limited to 'coreutils/tail.c')

diff --git a/coreutils/tail.c b/coreutils/tail.c
index 024441e73..1703eefc6 100644
--- a/coreutils/tail.c
+++ b/coreutils/tail.c
@@ -69,12 +69,27 @@ int tail_main(int argc, char **argv)
 	char *s, *start, *end, buf[BUFSIZ];
 	int i, opt;
 
-	if (( argc >= 2 ) && ( argv [1][0] == '-' ) && isdigit ( argv [1][1] )) {
-		count = atoi ( &argv [1][1] );
-		optind = 2;
+	if (argc >= 2) {
+		int line_num;
+		switch (argv[1][0]) {
+			case '+':
+				from_top = 1;
+				/* FALLS THROUGH */
+			case '-':
+				line_num = atoi(&argv[1][1]);
+				if (line_num != 0) {
+					optind = 2;
+					count = line_num;
+				}
+				break;
+		}
 	}
 
-	while ((opt = getopt(argc, argv, "c:fhn:q:s:v")) > 0) {
+#ifdef CONFIG_FEATURE_FANCY_TAIL
+	while ((opt = getopt(argc, argv, "c:fn:q:s:v")) > 0) {
+#else
+	while ((opt = getopt(argc, argv, "fn:")) > 0) {
+#endif
 		switch (opt) {
 			case 'f':
 				follow = 1;
-- 
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