Convert git-log to markdown (NetNewsWire)

netnewswire-convert.sh

#!/usr/bin/env bash
# Unofficial Bash Strict Mode
set -euo pipefail
IFS=$'\n\t'

function group_on_date {
    awk $'NR==1 {
            cur_year=substr($1,1,4)
            cur_month=substr($1,6,2)
            printf "## %s\\n", cur_year
        }{
            year=substr($1,1,4)
            month=substr($1,6,2)
            if (year != cur_year) {
                cur_year=year
                cur_month="01"
                printf ".\\n\\n## %s\\n", year
            }
            if (month != cur_month) {
                cur_month=month
                printf ".\\n\\n%s",$2
            } else {
                if ($1 == "2018-08-28" && ($2=="Start" || $2=="Continue")) {
                    if ($2=="Start") printf " **🎉[%s][home]",$2
                    else printf " [%s][home]🏡**",$2
                } else {
                    printf " %s",$2
                }
            }
        }
        END {
            printf ".\\n"
        }'
}

#git clone https://github.com/brentsimmons/NetNewsWire.git
#cd NetNewsWire
git log --reverse --date=short --pretty='%ad %s' | group_on_date

# Top 35 used verbs
# git log --reverse --pretty='%s'|awk '{print $1}'|sort|uniq -c|sort -r|head -n 35