Detect extremely long output and make it a gist

[skalnik]

I was ranting about our Hayt spam to @jameswhite and he purposed a great solution. If the output will be over some number, throw it into a Gist and then paste the link. This would solve our spam problem when @croddy decides to ask who is Muta_work.

[jameswhite]

This will take the first 3 lines, put them to stdout and gist the whole thing and paste the gist link to stdout.

echo -n "${GITHUB_USER_ACCESS_TOKEN}" > "${HOME}/.gist"
cat - | tee >(echo -e '```'; head -3 ; echo -n -e "...\n"; echo -n '```'; echo -n -e "\nContinued in: ")  >(gist -p)  >/dev/null