Merge pull request #361 from mknos/diff-stdindir

diff: comparing stdin with directory
briandfoy · Dec 2, 2023 · 7c6bf13 · 7c6bf13
2 parents a95471c + cb6b76b
commit 7c6bf13
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/bin/diff b/bin/diff
@@ -129,8 +129,10 @@ my ($fh1, $fh2);
 
 if ($file1 eq '-') {
     exit 0 if ($file2 eq '-');
+    bag("cannot compare '-' to a directory") if (-d $file2);
     $fh1 = *STDIN;
 } elsif (-d $file1) {
+    bag("cannot compare '-' to a directory") if ($file2 eq '-');
     bag("'$file2': is a directory") if (-d $file2);
     my $path = join('/', $file1, basename($file2));
     open($fh1, '<', $path) or bag("Couldn't open '$path': $!");