On Thu, Dec 20, 2018 at 1:26 AM brian m. carlson <sandals@xxxxxxxxxxxxxxxxxxxx> wrote: > @@ -5159,6 +5159,8 @@ int diff_opt_parse(struct diff_options *options, > options->flags.funccontext = 1; > else if (!strcmp(arg, "--no-function-context")) > options->flags.funccontext = 0; > + else if (!strcmp(arg, "--literally")) > + options->flags.read_literally = 1; You probably want to check in diff_setup_done() that if flags.read_literally is set but flags.no_index is not, then abandon ship and die() because --literally is not used with --no-index. Even when --no-index is implicit, flags.no_index should be set. I wonder if --follow-symlinks would be a good alternative for this (then if the final destination is unmmapable then we just read the file whole in memory without the user asking, so it will work with pipes). --follow-symlinks then could be made work with non-"no-index" case too. But --literally is also ok. -- Duy
