Introduce linting for code editor

[karmatosed]

Consider adding this just like plugins.

[swissspidy]

I think that's actually a duplicate of #12839. It was also discussed during the summit that it should finally get implemented. That ticket has been open for 7 years now.

[ahortin]

@swissspidy Can you pelase explain why something like this and ticket #12423 are more of a priority than #9757, which has also been waiting more than 8 years for actioning. WordPress is first and foremost a cms, not a code editor. I'm confident in saying that more people want to be able to upload a zip to replace an existing plugin/theme, than wanting to be able to edit plugin/theme code.

If you want to edit plugin/theme files, use a proper editor/development environment. After editing your code, wouldn't it be great if you could then zip up your updated plugin/theme files and then upload it within the dashboard to replace an existing plugin/theme!

[swissspidy]

@ahortin I guess this ticket was opened in response to ​https://make.wordpress.org/core/2017/06/16/4-9-and-gutenberg/, which was just published the other day.

In the meantime I think we can do another user-focused 4.9 release with the theme of editing code and managing plugins and themes, doing v2s and polishing some features we brought into WP last year.

Sounds like #9757 might fall under that, too! Again, I didn't say it's something that will never be implemented. If someone (you, me, anybody) can step up and contribute to that, they are more than welcome to do so. It's just so that nothing happened after the initial patch on that ticket.

[ahortin]

@swissspidy Thanks for the clarification :-)

[melchoyce]

Closing in favor of #12839.