"--right2left" exist?

[Akihiro]

Hello.
My name is Akihiro, aged 37, japanese.
This is my first post on this forum.
If there's something wrong with my post, please let me know.

I'm just testing ebook-convert command for my manga like following.
$ ebook-convert sample.azw3 test.epub --right2left
:
ebook-convert: error: no such option: --right2left

And I got error above.
right2left option exists on the manual(http://manual.calibre-ebook.com/cli/ebook-convert.html.)

If right2left option is abandoned, is there any alternative to implement the feature?

Thanks in advance.
Akihiro

$ ebook-convert --version
ebook-convert (calibre 2.20.0)

[PeterT]

I think that option is only available for an input file that is a comic (is CBR / CBZ) and not for a comic within an AZW3 format.

[eschwartz]

Agreed -- it is a Comic Input specific option.

Also the docs are autogenerated from the source code comments, so they are nice and accurate.

[Akihiro]

Thanks for your reply.

I checked if the other Comic Input Option here (http://manual.calibre-ebook.com/cli/...-input-options) work on azw3 and confirmed these options don't work on azw3. Thank you.

And from a web page (http://jarp.does.notwork.org/diary/2....html#20130812 written in Japanese), I found what feature "right2left" option have and howto resolve the problem.

"right2left" option insert "page-progression-direction="rtl"" in <spin> tag on epub file.

$ unzip -p ebook.epub content.opf | sed 's/<spine/<spine page-progression-direction="rtl"/' > content.opf
$ zip ebook.epub content.opf

Above commands is described on the aforementioned page.

So I checked if "page-progression-direction="rtl"" exists in content.opf within epub which generated from azw3 and confirmed it exists, though I couldn't add "right2left" option. Strange...

Anyway, thank you.
Akihiro