From 80d70870f52674ecb7e1dd6f7c517d689ab6be1f Mon Sep 17 00:00:00 2001
From: Jim Meyering <jim@meyering.net>
Date: Sat, 27 Nov 1993 21:59:45 +0000
Subject: [PATCH] * (main): If an adjustment is specified, but no command is
 given, give a diagnostic in addition to the usage message. (isinteger):
 Accept a leading `+'.

---
 src/nice.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/nice.c b/src/nice.c
index 94f750eb52..ca989cda5e 100644
--- a/src/nice.c
+++ b/src/nice.c
@@ -125,7 +125,10 @@ main (argc, argv)
   if (optind == argc)
     {
       if (adjustment_given)
-	usage (1);
+	{
+	  error (0, 0, "a command must be given with an adjustment");
+	  usage (1);
+	}
       /* No command given; print the priority. */
       errno = 0;
       current_priority = GET_PRIORITY ();
@@ -157,7 +160,7 @@ static int
 isinteger (s)
      char *s;
 {
-  if (*s == '-')
+  if (*s == '-' || *s == '+')
     ++s;
   if (*s == 0)
     return 0;
-- 
2.47.3