ghostty/TODO.md

Bugs:

• Asian characters (amongst others) turn into missing glyph symbol, should be able to find them somewhere when other programs can render them fine.

Performance:

• for scrollback, investigate using segmented list for sufficiently large scrollback scenarios.
• reflow: text reflow is really poorly implemented right now specifically for shrinking columns. Look into this. This may require changing the screen data structure.
• Loading fonts on startups should probably happen in multiple threads
• Windowing event loop should not check shouldClose on every window and should use should close callbacks instead.
• Window shutdown should be done in threads but GLFW window close cannot be done in multiple threads making this a bit tricky.
• deleteLines is very, very slow which makes scroll region benchmarks terrible

Correctness:

• exit in the shell should close the window
• test wrap against wraptest: https://github.com/mattiase/wraptest
  • automate this in some way
• Charsets: UTF-8 vs. ASCII mode
  • we only support UTF-8 input right now
  • need fallback glyphs if they're not supported
  • can effect a crash using vttest menu 3 10 since it tries to parse ASCII as UTF-8.

Improvements:

• scrollback: configurable
• selection on top/bottom should scroll up/down (while extending selection)
• double-click to select a word
• triple-click to select a line
• shift-click and drag to continue selection
• keybind action: increase/decrease font size

Mac:

• Set menubar
• Preferences window

Major Features:

• Reloadable configuration
• Bell
• Sixels: https://saitoha.github.io/libsixel/
• Kitty keyboard protocol: https://sw.kovidgoyal.net/kitty/keyboard-protocol/
• Kitty graphics protocol: https://sw.kovidgoyal.net/kitty/graphics-protocol/
• Colored/styled underlines: https://sw.kovidgoyal.net/kitty/underlines/