fzf_git_branches.sh

#!/usr/bin/env bash

function fgb() {
	local -r git_branches="git branch --all --color --format=$'%(HEAD) %(color:yellow)%(refname:short)\t%(color:green)%(committerdate:short)\t%(color:blue)%(subject)' | column --table --separator=$'\t'"
	local -r get_selected_branch='echo {} | sed "s/^[* ]*//" | awk "{print \$1}"'
	local -r git_log="git log \$($get_selected_branch) --graph --color --format='%C(white)%h - %C(green)%cs - %C(blue)%s%C(red)%d'"
	local -r git_diff='git diff --color $(git branch --show-current)..$(echo {} | sed "s/^[* ]*//" | awk "{print \$1}")'
	local -r git_show_subshell=$(cat <<-EOF
		[[ \$($get_selected_branch) != '' ]] && sh -c "git show --color \$($get_selected_branch) | less -R"
	EOF
	)
	local -r header=$(cat <<-EOF
	> ALT-M to merge with current * branch | ALT-R to rebase with current * branch
	> ALT-C to checkout the branch
	> ALT-D to delete the merged local branch | ALT-X to force delete the local branch
	> ENTER to open the diff with less
	EOF
	)

	eval "$git_branches" \
	| fzf \
		--ansi \
		--reverse \
		--no-sort \
		--preview-label '[ Commits ]' \
		--preview "$git_log" \
		--header-first \
		--header="$header" \
		--bind="alt-c:execute(git checkout \$($get_selected_branch))" \
		--bind="alt-c:+reload($git_branches)" \
		--bind="alt-m:execute(git merge \$($get_selected_branch))" \
		--bind="alt-r:execute(git rebase \$($get_selected_branch))" \
		--bind="alt-d:execute(git branch --delete \$($get_selected_branch))" \
		--bind="alt-d:+reload($git_branches)" \
		--bind="alt-x:execute(git branch --delete --force \$($get_selected_branch))" \
		--bind="alt-x:+reload($git_branches)" \
		--bind="enter:execute($git_show_subshell)" \
		--bind='ctrl-f:change-preview-label([ Diff ])' \
		--bind="ctrl-f:+change-preview($git_diff)" \
		--bind='ctrl-i:change-preview-label([ Commits ])' \
		--bind="ctrl-i:+change-preview($git_log)" \
		--bind='f1:toggle-header' \
		--bind='f2:toggle-preview' \
		--bind='ctrl-y:preview-up' \
		--bind='ctrl-e:preview-down' \
		--bind='ctrl-u:preview-half-page-up' \
		--bind='ctrl-d:preview-half-page-down'
}