Autocorrect, autopunctuation, and autocapitalization not working on iOS Safari

[josephdpurcell]

Description

The autocorrect, autopunctuation, and autocapitalization features do not work on iOS for the content input.

Steps to reproduce

1. Install Grav
2. Login
3. Create a Page
4. In the content area no characters get autocapitalized (eg after a period)
5. Notice that entering two spaces does not result in a period followed by a space
6. Notice that misspelled words do not result in a prompt for the correct spelling

Versions

Grav: 1.7.37.1
Admin: 1.10.37.1
PHP: 8.1.13
iOS Safari version: 15

Recording

FullSizeRender.MOV

[josephdpurcell]

Some context: I am in search of a "good" markdown editing experience, which in my opinion includes these features. I am taking notes on directus/directus#16762, which includes a link to a spreadsheet that has an evaluation of various editors and CMS's.

I see that user/plugins/admin/themes/grav/package.json references CodeMirror 5, which lacks support for these auto-* features, see codemirror/codemirror5#7009.

CodeMirror6 does not codemirror/dev#1020. I'll note on the roadmap for Grav 2 that an upgrade to CodeMirror6 with support for iOS' auto-* features would be great.