[hackers] [sbase] Fix two more instances where the check for "-" is insufficient || sin

[git]

commit 4399f354486612c679a343c7f9e1ff18df857098
Author: sin <s...@2f30.org>
Date:   Tue Nov 18 21:57:54 2014 +0000

    Fix two more instances where the check for "-" is insufficient

diff --git a/cmp.c b/cmp.c
index c9d38f3..976bc00 100644
--- a/cmp.c
+++ b/cmp.c
@@ -37,7 +37,7 @@ main(int argc, char *argv[])
        if (argc != 2)
                usage();
 
-       if (argv[0][0] == '-')
+       if (argv[0][0] == '-' && !argv[0][1])
                argv[0] = "/dev/fd/0";
        fp[0] = fopen(argv[0], "r");
        if (!fp[0]) {
@@ -46,7 +46,7 @@ main(int argc, char *argv[])
                exit(Error);
        }
 
-       if (argv[1][0] == '-')
+       if (argv[1][0] == '-' && !argv[1][1])
                argv[1] = "/dev/fd/0";
        fp[1] = fopen(argv[1], "r");
        if (!fp[1]) {
diff --git a/comm.c b/comm.c
index 59cfc3d..a946cba 100644
--- a/comm.c
+++ b/comm.c
@@ -41,7 +41,7 @@ main(int argc, char *argv[])
                usage();
 
        for (i = 0; i < LEN(fp); i++) {
-               if (argv[i][0] == '-')
+               if (argv[i][0] == '-' && !argv[i][1])
                        argv[i] = "/dev/fd/0";
                if (!(fp[i] = fopen(argv[i], "r")))
                        eprintf("fopen %s:", argv[i]);