2.11 tag autocomplete is case-sensitive

[hituro]

Describe the bug.

The tag adding UI is case-sensitive when suggesting tags.

Steps to reproduce:

Type a tag name in a different case, no suggestions appear

Expected behavior:

Tags should be suggested regardless of the search case

Additional context on this problem.

While the Twine spec is silent on whether tags are be case-sensitive, having to remember not only the tag name when adding one, but whether you capitalised them, is really awkward.

Twine version number

2.11.x

Does this problem occur with the web version of Twine or the desktop app?

Desktop app

What operating system does this problem occur on?

Other

If this problem is occurring with the web version of Twine, what browser does it occur on?

None

Presubmission checklist

• I am interested in working on code that would fix this bug. (This is not required to submit a bug report.)
• I have done a search and believe that an issue does not already exist for this bug in the GitHub repository.
• If this problem is occurring with the app version of Twine, it still happens after I remove the user.css file from my Twine folder. (You would've added this file yourself. If you don't understand this question, you can safely check this box.)
• I have read and agree to abide by this project's Code of Conduct.

[klembot]

Changing this to an enhancement request because it's requesting a change in functionality.

At least right now, the tag autocomplete only suggests text after what you've written, and not anything before. But if we use the autocomplete idea from here, it looks like it is case-insensitive.