Make command line tools respect macOS appearance

Terminal integration with macOS appearance.md

MacOS dark mode & command line tools

1. Beta version of iTerm2 has built-in support for system appearance and will change themes in sync with macOS;
2. Setup dark-mode-notify to launch on start and call a custom shell script (eg: appearance-change.sh) when appearance changes;
3. Update the script as required

NOTE:

• neovim v0.8.0+ can issue self referencing commands. For example, try putting this into your init.lua to prevent nested vim instances when using built-in terminal:

  vim.env.EDITOR = string.format('nvim --server %s --remote --', vim.api.nvim_get_vvar('servername'))

• A single command can be executed in all instances of neovim using the vollowing shell function:

  in_all_nvim() {
    : "${1:?Missing required argument: cmd}"
    ls "${XDG_RUNTIME_DIR:-${TMPDIR}nvim.${USER}}"/*/nvim.*.0 \
      | xargs -I SERVER /usr/local/bin/nvim --server SERVER --remote-send "<cmd>${1}<cr>"
  }

  • The use of <cmd>, rather than :, when sending a command to vim, ensures that the command is executed without affecting the user's current mode. This avoid a flickering effect if the user is not in Normal mode.

~ appearance-change.sh

#!/usr/bin/env sh

_is_dark_mode() {
  defaults read -g AppleInterfaceStyle 1>&- 2>&-
}

_in_all_nvim() {
  : "${1:?Missing required argument: cmd}"
  ls "${XDG_RUNTIME_DIR:-${TMPDIR}nvim.${USER}}"/*/nvim.*.0 \
    | xargs -I SERVER /usr/local/bin/nvim --server SERVER --remote-send "<cmd>${1}<cr>"
}

# Set by appearance-monitor, but missing if
# the script is invoked from the command line.
if [ -z "${DARKMODE}" ]; then
  if _is_dark_mode; then
    DARKMODE=1
  else
    DARKMODE=0
  fi
fi


if [ "${DARKMODE}" = '1' ]; then

  # This code is executed when macOS switches from Light to Dark mode
  _in_all_nvim "lua \
    require('projekt0n.github-theme_helper').colorscheme('dark')"
  ln -sf dark.yaml ~/.config/lsd/themes/local.yaml
  
else

  # This code is executed when macOS switches from Dark to Light mode
  _in_all_nvim "lua \
    require('projekt0n.github-theme_helper').colorscheme('light')"
  ln -sf light.yaml ~/.config/lsd/themes/local.yaml
  
fi