guix-dotfiles/home-config/fish/functions/_fzf_wrapper.fish

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function _fzf_wrapper --description "Prepares some environment variables before executing fzf."
# Make sure fzf uses fish to execute preview commands, some of which
# are autoloaded fish functions so don't exist in other shells.
# Use --function so that it doesn't clobber SHELL outside this function.
set -f --export SHELL (command --search fish)
# If FZF_DEFAULT_OPTS is not set, then set some sane defaults.
# See https://github.com/junegunn/fzf#environment-variables
if not set --query FZF_DEFAULT_OPTS
# cycle allows jumping between the first and last results, making scrolling faster
# layout=reverse lists results top to bottom, mimicking the familiar layouts of git log, history, and env
# border shows where the fzf window begins and ends
# height=90% leaves space to see the current command and some scrollback, maintaining context of work
# preview-window=wrap wraps long lines in the preview window, making reading easier
# marker=* makes the multi-select marker more distinguishable from the pointer (since both default to >)
set --export FZF_DEFAULT_OPTS '--cycle --layout=reverse --border --height=90% --preview-window=wrap --marker="*"'
end
fzf $argv
end