babi

a text editor, eventually...

installation

pip install babi

babi works best in a virtualenv

why is it called babi?

I used to use the text editor nano, frequently I typo this. on a qwerty keyboard, when the right hand is shifted left by one, nano becomes babi.

babi vs. nano

here is a youtube video where I discuss the motivation for creating and using babi instead of nano:

quitting babi

currently you can quit babi by using ^X (or via esc + :q).

key combinations

these are all of the current key bindings in babi

• ^S: save
• ^O: save as
• ^X: quit
• ^P: open file
• arrow keys: movement
• ^A / home: move to beginning of line
• ^E / end: move to end of line
• ^Y / pageup: move up one page
• ^V / pagedown: move down one page
• ^-left / ^-right: jump by word
• ^-home / ^-end: jump to beginning / end of file
• M-Up / M-Down: jump to previous / next paragraph
• ^_: jump to line number
• selection: shift + ...: extend the current selection
  • arrow keys
  • home / end
  • pageup / pagedown
  • ^-left / ^-right
  • ^-end / ^-home
• tab / shift-tab: indent or dedent current line (or selection)
• ^K / ^U: cut and uncut the current line (or selection)
• M-u / M-U or M-e: undo / redo
• ^W: search
• ^\: search and replace
• ^C: show the current position in the file
• ^-up / ^-down: scroll screen by a single line
• M-left / M-right: go to previous / next file
• ^Z: background
• ^T: run linter
  • by default, runs pre-commit run --files <filename>
  • outside of a git repo will run flake8 <filename> for python files
  • ^-S-Up, ^-S-Down: navigate to previous / next error
  • M-t focus the linting panel
  • ^C, ^X: clear and close the linting panel
  • Esc, M-t: unfocus the linting panel
  • arrow keys: movement inside the linting panel
• esc: open the command mode
  • :q: quit
  • :w: write the file
  • :wq: write the file and quit
  • :qall: quit every open file
  • :comment: comment out the current line / selection
  • :reload: reload the file contents
  • :sort: sort the file (or selection)
  • :tabsize X: set the tabsize

in prompts (search, search replace, command):

• ^C: cancel
• ^K: cut to end
• ^R: reverse search

setting up syntax highlighting

syntax highlighting should work out of the box!

if you want a custom theme find a visual studio code theme, convert it to json (if it is not already json) and put it at ~/.config/babi/theme.json. a helper script is provided to make this easier: ./bin/download-theme NAME URL

keyboard shortcuts on macos

to get the most out of babi's built in keyboard shortcuts, a few settings must be changed on macos with Terminal.app:

• in System Preferences: Keyboard > Shortcuts > Mission Control: disable or rebind "Move left a space" and "Move right a space" (the defaults ⌃ → and ⌃ ← conflict)
• in Terminal.app: Terminal > Preferences > Profiles > Keyboard:
  • check Use Option as Meta key
  • ensure the following keys are enabled:
    • ⌃ →: \033[1;5C
    • ⌃ ←: \033[1;5D
    • ⇧ ↑: \033[1;2A
    • ⇧ ↓: \033[1;2B
    • ⇧ →: \033[1;2C
    • ⇧ ←: \033[1;2D

demos

most things work! here's a few screenshots

file view

this opens the file, displays it, and can be edited and can save! unknown keys are displayed as errors in the status bar. babi will scroll if the cursor goes off screen either from resize events or from movement. babi can edit multiple files. babi has a command mode (so you can quit it like vim :q!). babi also supports syntax highlighting