Blind user experience issues with code blocks

[briankung]

(Originally reported on rust-lang/book#3125)

I saw a comment on Reddit indicating that code blocks were difficult for blind readers to read:

I’m blind and find the Rust books hard to read since the arrow keys cause the pages to flip when I’m attempting to read code examples character by character. In the beginning this was very annoying because I was also learning syntax, but having passed that phase I’m mostly fine.

https://reddit.com/r/rust/comments/u63g90/_/i56o9jt/?context=1

I just wanted to surface it in case the topic hasn’t come up before.

• I have checked the latest main branch to see if this has already been fixed
• I have searched existing issues and pull requests for duplicates

URL to the section(s) of the book with this problem:

All / any code blocks

Description of the problem:

See above

Suggested fix:

[joshrotenberg]

I think I can reproduce this: if you don't click into a code block, right/left arrow keys go to the next/previous page, so presumably whatever method a blind user uses to advance through the page doesn't necessarily explicitly put the cursor into a code block.

[tavianator]

Related to #518

I manually remove the buttons on my site which also disables the left/right arrow keys, but a setting for this would be nice.

[brettchalupa]

@ehuss I'd like to take this issue on, but I think some guidance before I dig in would be helpful. Do you have an opinion on how to proceed with this and #518? Add config option to disable or disable by default with option to enable or something else?