A menu-bar app for macOS 14 or later
uvim reads and edits the focused field through Accessibility, and takes the keys it needs with a keyboard event tap. Type as usual, and press Esc for Normal mode.
Notarized by Apple · Free software under the GNU GPL
In most native Mac apps uvim can read and write the field and set its selection, so Normal mode also draws a block cursor. Choose a use case to watch it.
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A subset of Vim, in fields uvim can read and write. The README's What works lists more.
Counts, marks and registers work too. : commands, macros, z commands and text objects other than words beep instead.
Chromium browsers and Electron apps, such as Chrome, Dia and Linear, let uvim read a field but not set its selection. There uvim runs the same Normal-mode commands by pressing keys, and checks the field after each step: when the field does not answer as planned, it beeps and stops rather than edit the wrong text.
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When one of a field's writes, or one of the app's keys uvim relies on, fails its check, uvim switches that capability off for fields like that one until the app updates. The menu lists what it learned, with the day it failed; Try Again forgets it, and On and Off override it.
Notion comes with its own defaults, since each of its blocks is a separate field. Moving between the blocks of one document keeps the mode you were in.
There is no block cursor, and o and O paste their new line, because ⏎ could send a message.
Choose it under Normal Mode Key in the menu. In Normal mode with nothing half-typed, Esc still goes to the app, so press it twice to close a dialog. The default, ⌃[ (Control and the key to the right of P), keeps working either way.
An outlined i or r while keys type, a filled n or v while they are commands. Where uvim can set the selection, Normal mode also draws a block cursor.
In Insert mode uvim takes only Esc and ⌃[. In Normal mode apps keep every ⌘ and ⌥ combination and most ⌃ ones, so ⌃A, ⌃E and ⌃K work as in any Mac text field, and a key uvim does not know beeps instead of typing.
Auto works in text fields, text areas and combo boxes, never in password fields. Terminals and code editors start Off. Force drives apps that expose no text field to Accessibility, with arrow keys and ⌘Z, ⌘X, ⌘C and ⌘V.
uvim.app to /Applications before you open it for the first time.A release is signed with a Developer ID certificate and notarized by Apple, and it updates itself. The README has the full instructions, and how to build uvim from source.
uvim needs two permissions: Accessibility, to read and edit the focused field and to post keys, and Input Monitoring, for its keyboard tap. The tap sees every key you press, but uvim acts only on keys typed into a field it is working in, and it stands aside while macOS has Secure Event Input on, as it does in a password field.