Github Issues allow highlighting text and code

[danirui]

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I think adding the ability and flexibility of highlighting plaintext and inside code-blocks would be very helpful for many people using Github Docs.

Currently, we have the rudimentary methods of <mark>plaintext</mark> which looks like plaintext (an extremely subdued yellow color), and

def function():
+ green code highlight
- red code highlight

which I learned from https://github.com/orgs/community/discussions/42489#discussion-4689594. Sadly this latter option is not available in conjunction with syntax highlighting.

The capability for Github Markdown to highlight text clearly exists; just a little more flexibility (some choice of color), and/or conjunction with syntax highlighting would be a major boost.

I put this in the Accessibility category because personally, I find that highlighting text judiciously improves my ability to skim, read, and understand it.
Research (Keyword Highlighting Improves Comprehension for People with Dyslexia --- Rello, Saggion, Baeza-Yates 2014) indicates that indeed highlighting improves readability and comprehensibility for people with dyslexia. See also Constrained Highlighting in a Document Reader can Improve Reading Comprehension --- Joshi, Vogel 2024, or this SkepticsSE post.

For these reasons, I think it is important that Github allow users the ability/flexibility to highlight some plaintext and code, preferably with some choice of (bright) colors.

[github-actions[bot]]

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[cehfisher]

Hello @danirui - thank you for providing this feedback! This is a really great feature request. We have filed this with our Accessibility team so that it can be reviewed and will follow-up here with any additional questions or updates. Thanks again!