ait/TODO.md

Todo

GNU Emacs Features

Easy

• delete word
• show selected region
• M-\ remove whitespace
• C-o, insert newline below
• C-l, recenter screen
• C-t and M-t, transposes
• highlight isearch results
  • it only highlights the one you're on
• universal argument (C-u)
  • only works with some functions for now
• numerical arguments (C-[0-9])
• zap to char (M-z)
• suspend (C-z)
• lowercase/upper case word
• display line/col in modeline

Medium

• Jump bracket C-M-f and C-M-b
• show match bracket
• C-x C-x, return to mark
  • okay this was very easy...
• file path for buffers
  • prereq for backupfiles
• backup files (i.e. foo.txt~)
• negate (C--/M--)
  • Just works with zap-to-char for now
• auto-indent

Hard

• Vertical split (C-x 3)
• buffer controls (C-x b)
• better isearch
  • highlight all searching on the page
  • put new page searches in middle of the screen
  • case-insensitive searches unless a capital letter is present in query
  • auto-jump to the first match (most Emacs' do this)
• proper undo/redo
  • undo
  • redo (redo might be bound to C-x r or M-/ which would conflict with dabbrev-expand)
• keyboard macros
  • save the keybindings and replay them
• better clipboard support
  • just use M-e pbpaste or M-e xclip-whatever
• unicode inputs
• Alert when a buffer-revert is needed (file has been updated outside the editor)

Maybe Later

Likely

• open file at line number
  • Go to the line specified by number (do not insert a space between the + sign and the number).
  • If a negative number is specified, the line number counts backwards from the end of the file.
  • I.e. +-1 will be the last line of the file, +-2 will be second last.
  • I.e. ait +20 file.txt
• tab completion for shell commands

Considering

• Auto-save files (i.e. #foo.txt#)
• open multiple files from shell

Less Likely

• keybindings in msgline (isearch, find-file, etc.)
  • all keybindings use the curwp or curbp and msgline doesn't have those
  • might only support some bindings.
• various colors for highlighting
  • this might be tricky to work with various terminal colors
• Beginning & end of paragraph (M-a, M-e)
  • It appears version 29 of GNU Emacs has replaced these functions with beginning/end of sentence.
• M-/, dabbrev-expand
  • big maybe on this one, but it is very useful.
• man page and --help option
• highlight trailing whitespace
• syntax highlighting based on file extension

Non-Standard Emacs

Likely

• quick jump to char in line
• shell commands
  • input STDOUT at point or new buffer
  • pipe region or file into shell command (sort, linter, etc)
  • accept output of a program as an input (fzf, pick, etc.)

Less Likely

• jump to word
• multiple cursors
• avy quick jump to line

Housekeeping

• Standardize tabs or spaces
• More generic functions
• Speed up rendering
  • disabled keyword syntax highlight to speed this up
  • keyword syntax highlighting isn't really that important
• Compile on:
  • OpenBSD
  • FreeBSD
• tty on BSDs
  • technically not fixed, but I added in a wsvt25 alias to termbox.

Bugs

High Priority

• undoing is broken sometimes
• canceled shell commands shouldn't do things
• selecting a region and ending the cursor at curbp->b_ebuf and cutting will cause an assertion error.
• if you edit a file and save it a lot, eventually it'll start saving binary data at the top of the file
• if the region contains a $, it will mess up shell commands due to $'s use in shell
• M-t transposes symbols as well
• cutting from the last line usually breaks the editor
• shell commands can be buggy
• screen flickers, especially on large files
  • it appears to happen when you get farther in the file

Low Priority

• sometimes isearch doesn't highlight the entire match when you're not current on it
• sometimes isearch doesn't properly recenter
• find-file crashes if you're in a deep path
• sometimes the top row's first character is missing
• matching <> '' and "" doesn't work right when you're on the ending one
  • I didn't fix the string '' or "" because figuring out direction is too annoying. The rule will be that you can only match '' and "" when on the front.
• C-x b doesn't work well sometimes
• opening files of the same name have no unique id
• can only input and view standard emojis

Termbox

• Basic rendering
• some functions don't work like isearch and find-file
• use termbox stuff for keybindings
• highlighting
• atto syntax highlighting
  • atto supported some very basic highlighting
• UTF8
• use termbox keys for keybind definitions