sbase

commit 0ae546333bdbf9f489f8a9508711bf5081bff1cc
parent 54ccddd2e752372b98e85fce355d0d28e7621f75
Author: Roberto E. Vargas Caballero <k0ga@shike2.net>
Date:   Mon,  3 Nov 2025 13:06:56 +0100

ed: Validate better range for k and z

The k and z commands require 1 and only one address
so checking for != 1 catches the unsual case when
nlines == 0, that only can happen when we are editing
an empty file.

Diffstat:
M
ed.c
 | 
4
++--

1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/ed.c b/ed.c
@@ -1383,7 +1383,7 @@ repeat:
 	      		join();
 		break;
 	case 'z':
-		if (nlines > 1)
+		if (nlines != 1)
 			goto bad_address;
 		if (isdigit(back(input())))
 			num = getnum();
@@ -1393,7 +1393,7 @@ repeat:
 		scroll(num);
 		break;
 	case 'k':
-		if (nlines > 1)
+		if (nlines != 1)
 			goto bad_address;
 		if (!islower(c = input()))
 			error("invalid mark character");