[Help document bug] For w3m, the help document misses some options

[ccccmd]

The "--help" option of s2nd misses an option "graph", "no-graph", "halfdump", "halfload", "backend", "backend_batch", "ri", "sixel" for version 0.5.3.

For the option "graph", the following code appears during option parsing and modifies the UseGraphicChar in main.c:616 for version 0.5.3.

        UseGraphicChar = GRAPHIC_CHAR_DEC;

For the option "no-graph", the following code appears during option parsing and modifies the UseGraphicChar in main.c:618 for version 0.5.3.

        UseGraphicChar = GRAPHIC_CHAR_ASCII;

For the option "halfdump", the following code appears during option parsing and modifies the w3m_dump in main.c:667 for version 0.5.3.

        w3m_dump = DUMP_HALFDUMP;

For the option "halfload", the following code appears during option parsing and modifies the w3m_dump, w3m_halfload, DefaultType , default_type in main.c:669-671 for version 0.5.3.

        w3m_dump = 0;
        w3m_halfload = TRUE;
        DefaultType = default_type = "text/html";

For the option "backend", the following code appears during option parsing and modifies the w3m_backend in main.c:674 for version 0.5.3.

        w3m_backend = TRUE;

For the option "backend_batch", the following code appears during option parsing and modifies the w3m_backend, backend_batch_commands and calls the pushText in main.c:677-682 for version 0.5.3.

        w3m_backend = TRUE;
        if (++i >= argc)
            usage();
        if (!backend_batch_commands)
            backend_batch_commands = newTextList();
        pushText(backend_batch_commands, argv[i]);

For the option "ri", the following code appears during option parsing and modifies the enable_inline_image in main.c:717 for version 0.5.3.

        enable_inline_image = INLINE_IMG_OSC5379;

For the option "sixel", the following code appears during option parsing and modifies the enable_inline_image in main.c:720 for version 0.5.3.

        enable_inline_image = INLINE_IMG_SIXEL;

But it does not appear in the document provided by "--help".

It may prevent users from using the relevant function.

[bptato]

FWIW, I only left in "ri" and "sixel" for backwards compatibility. Better set the inline image method in the options panel (press `o'), or with the -o flag.

Also, while we're at it, right now the -help output is ~2 pages long, so you'd need a pager (or terminal scrollback) to even view all switches. I agree that they should be documented somewhere, but maybe those that can be set in the options page too could be moved to the man page only?

[ccccmd]

Help document or man page are both ok. I think maybe they should contains all options to make the user know all options.