draft_fnc_commitsByWeekday

commitsByWeekday.sh

function commitsByWeekday() {
    optionPicked "Git commits by weekday:"
    echo -e "\tday\tsum"
    local counter=1
    for i in Mon Tue Wed Thu Fri Sat Sun
    do
        echo -en "\t$counter\t$i\t"
        git -c log.showSignature=false shortlog -n $_merges --format='%ad %s' \
            $_since $_until | grep "$i " | wc -l
        counter=$((counter+1)) 
    done | awk '{

    }
    NR == FNR { 
        count[$1" "$2] = $3; 
        total += $3;
        next 
    }
    END{ 
        for (day in count) {
            s="|";
            if (total > 0) {
                percent = ((count[day] / total) * 100) / 1.25;
                for (i = 1; i <= percent; ++i) {
                    s=s"█"
                }
                printf("\t%s\t%s\t%-0s\t%s\n", substr(day,0,1), substr(day,3,5), count[day], s);
            }
        }
    }' | sort -k 1 -n | awk '{$1=""}1' | awk '{$1=$1}1' | awk '{printf("\t%s\t%s\t%s\n", $1, $2, $3)}'
}

This code snippet appears to handle what Issue #91 mentions. Tested successfully on RHEL 7.6, WSL (Ubuntu 16.04), and macOS 10.14.

The only change I would make would be to make counter local i.e. local counter=1 so that it is not within the global scope.

Nice work :)