grub-mkrescue: Recognize -output as an alias of --output.

This helps us to be in line with xorriso -as mkisofs.

Suggested by: Thomas Schmitt

diff --git a/util/grub-mkrescue.c b/util/grub-mkrescue.c
index 815fc91..5a7993f 100644 (file)
--- a/util/grub-mkrescue.c
+++ b/util/grub-mkrescue.c
@@ -451,6 +451,12 @@ main (int argc, char *argv[])
     int i;
     for (i = 1; i < argc; i++)
       {
+       if (strcmp (argv[i], "-output") == 0) {
+         argp_argv[argp_argc++] = "--output";
+         i++;
+         argp_argv[argp_argc++] = argv[i];
+         continue;
+       }
        switch (args_to_eat (argv[i]))
          {
          case 2: