auto-sized-fzf

A --preview=.... generator that is based on the shell's current dimensions.

Installation

Install by:

# sourcing the file
. /path/to/auto-sized-fzf/auto-sized-fzf.sh

Usage

Run fzf with preview settings:

fzf $(fzf_sizer_preview_window_settings)

Set fzf defaults:

FZF_DEFAULT_OPTS="$(fzf_sizer_preview_window_settings)"

Set fzf defaults on a new prompt (zsh solution):

# resize window and fzf preview sizing/location will resize with you
precmd() {
  FZF_DEFAULT_OPTS="--border --no-height $(fzf_sizer_preview_window_settings)"
}

Hidden preview window (when hidden by default):

fzf $(fzf_sizer_hidden_preview_window_settings)

Customization

!! AVOID CUSTOMIZING: the defaults are very nice !!

FZF_SIZER_VERTICAL_THRESHOLD

If you use vertical or varying sized terminals/windows often, you may want to configure the threshold for switching to a vertical view. This ratio is calculated by running "__WIDTH__ / __HEIGHT__ > $FZF_SIZER_VERTICAL_THRESHOLD". This is calculated using GNU bc. The default is 2.0.

export FZF_SIZER_VERTICAL_THRESHOLD="1.7 * __HEIGHT__ / 80"

FZF_SIZER_VERTICAL_PREVIEW_PERCENT_CALCULATION and FZF_SIZER_HORIZONTAL_PREVIEW_PERCENT_CALCULATION

You can also configure how the size of the preview window is calculated. They're calculated using GNU bc. Try using Desmos to tweak the calculation. The defaults are more complex than shown below.

# use __WIDTH__ for horizontal scenarios
export FZF_SIZER_HORIZONTAL_PREVIEW_PERCENT_CALCULATION='max(50, min(80, 100 - (7000 / __WIDTH__)))'

# use __HEIGHT__ for horizontal scenarios
export FZF_SIZER_VERTICAL_PREVIEW_PERCENT_CALCULATION='max(50, min(80, 100 - (5000 / __HEIGHT__)))'

FZF_SIZER_VERTICAL_PREVIEW_LOCATION and FZF_SIZER_HORIZONTAL_PREVIEW_LOCATION

See fzf man pages for values.

Really, you can configure whatever you want about the preview window (e.g. nofollow:cycle:bottom).