0x10-line bash script to mirror current repo to private gist

gg

#!/usr/bin/env bash
if ! git remote 2>/dev/null | grep -qE '^gist$' # if not previously gisted, create new gist and mirror
then if [ -z "$(git config github.token)" ] # we warn but procede if no api token is set
     then echo "warning: no api token found, to add follow instructions on github account page."; fi
     echo "creating a new gist using your github authentication..."
     SHA=$(curl https://gist.github.com/gists --include -sS \
           --data login=$(git config github.user) \
           --data token=$(git config github.token) \
           --data action_button=private \
           --data 'file_ext[gistfile1]=txt&file_contents[gistfile1]=..?' \
           | perl -e 'for(<>){if(/^Location: *https?:\/\/gist.github.com\/([0-9a-f]+)/){print $1}}')
     if [ "$SHA" ]; then if ! git branch &>/dev/null; then git init; fi # if not in repo, init
                         git remote add gist git@gist.github.com:$SHA.git
                         echo "mirroring to new remote \"gist\" at git@gist.github.com:$SHA.git..."
                         git push --mirror gist # --mirror to force out initial gist contents
     else echo "error: failed to create new gist"; false; fi
else git push --all gist; fi # if already gisted, push commited changes