Function to print the contents of a gist in a terminal

gist.bash

# Usage: gist url-or-hash  or  gist [-p] [file...]
#
#   Given a url or hash, print a dump of the gist. Otherwise, create a new
#   gist of the given file arguments, or stdin if no files are given.
#   -p forces the arguments to be treated as files to be posted.
#
# Examples:
#
# - dump a gist in the terminal:
#     gist https://gist.github.com/geirha/15103ebee61f2b129f2897be2397da2a
#
# - create a new gist with two files
#     gist file1.txt file2.txt

gist() {
    local hash re='^(https?://[^/]*/[^/]*/)?([[:xdigit:]]{32})' post
    case $1 in -p) post=1; shift ;; esac
    [[ $1 = -- ]] && shift
    if (( !post && $# == 1 )) && [[ $1 =~ $re ]]; then
        hash=${BASH_REMATCH[2]}
        curl -sSf "https://api.github.com/gists/$hash" |
        jq -r '.files | values[] | (.content|contains("\r")) as $cr | (
            "==> \(.filename) \(if ($cr) then "(Contains CRs) " else "" end)<==",
            .content
        )'
        (( PIPESTATUS[0] == 0 )) || return
        curl -sSf "https://api.github.com/gists/$hash/comments" |
        jq -r 'if (length > 0) then
            "=== Comments ===",
            (.[]|("\(.user.login) \(.updated_at)","\t\(.body|gsub("\n";"\n\t"))"))
        else
            ""
        end'
    else
        {
            local name
            while (( $# > 1 )); do
                name=${1##*/}
                jq --arg name "$name" -sR '{($name):{"content":.}}' "$1"
                shift
            done
            name=${1-stdin} name=${name##*/}
            jq --arg name "$name" -sR '{($name):{"content":.}}' "$@"
        } |
        jq -s 'add|{"files":.}' |
        curl -sSf -d @- https://api.github.com/gists |
        jq -r .html_url
    fi
}