bin: Better handle --

We would stop passing through `--` and args after it to the underlying
command in `ostree_run`. This made it impossible to use `--` to tell the
parser that following args starting with `-` really are positional.

AFAICT, that logic for `--` here came from a time when we parse options
manually in a big loop, in which case breaking out made sense (see
97558276e4f855442337be01abc8f90cf0dd1810).

There's an extra step here, which is that glib by default leaves the
`--` in the list of args, so we need to take care to remove it from the
list after parsing.

Closes: #1898

Closes: #1899
Approved by: rfairley

1 files changed, 16 insertions, 5 deletions

diff --git a/src/ostree/ot-main.c b/src/ostree/ot-main.c
index c9c4f299..4b72f399 100644
--- a/src/ostree/ot-main.c
+++ b/src/ostree/ot-main.c
@@ -152,11 +152,6 @@ ostree_run (int    argc,
             }
         }
 
-      else if (g_str_equal (argv[in], "--"))
-        {
-          break;
-        }
-
       argv[out] = argv[in];
     }
 
@@ -348,6 +343,22 @@ ostree_option_context_parse (GOptionContext *context,
   if (!g_option_context_parse (context, argc, argv, error))
     return FALSE;
 
+  /* Filter out the first -- we see; g_option_context_parse() leaves it in */
+  int in, out;
+  gboolean removed_double_dashes = FALSE;
+  for (in = 1, out = 1; in < *argc; in++, out++)
+    {
+      if (g_str_equal ((*argv)[in], "--") && !removed_double_dashes)
+        {
+          removed_double_dashes = TRUE;
+          out--;
+          continue;
+        }
+
+      (*argv)[out] = (*argv)[in];
+    }
+  *argc = out;
+
   if (opt_version)
     {
       /* This should now be YAML, like `docker version`, so it's both nice to read