Kenny Lee Sin Cheong [off-list ref] writes:
If I'm understanding correctly, the problem of checking revisions before
arg is that an option fed to handle_revision_arg() might die() before getting
checked as an option in cases where a file with the same name exists?
But doesn't verify_non_filename() already return silently if arg begins
with "-"? It die() only after making that check.
If an option with ".." in it such as -$opt..ion is really given to
handle_revision_arg() then verify_non_filename should not be a problem.
Yes, but should we be relying on that behaviour? The special casing
to assume that no sane person would name a file starting with a dash
is what I find somewhat disturbing.