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dotfiles/.config/zsh/autoload/git/git-perm-stash

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#!/usr/bin/env zsh
emulate -L zsh -eu
local REF_LEN DIR idx stash_ref commit_ref
REF_LEN=8
DIR="$HOME/gitstashes"
git rev-parse
idx="${1:-0}"
stash_ref="$(git rev-parse stash@{$idx} | cut -c-$REF_LEN)"
commit_ref="$(git rev-parse HEAD | cut -c-$REF_LEN)"
git stash show -up "$idx" > \
"${2:-$DIR}/${PWD//\//__}__${commit_ref}__$stash_ref.diff"