md_render: live update for Markdown → HTML using Pandoc

md_render.sh

#!/bin/bash
set -eo pipefail

markdown_file=$1
[ -e "$markdown_file" ] || {
        echo "usage: $0 MARKDOWN_FILE"
        exit 1
}

html_file="$(mktemp)"
echo "Output: $html_file"

function update() {
        pandoc "$markdown_file" -f markdown -t html -s -o "$html_file"
}

function finish() {
        rm "$html_file"
}
trap finish EXIT


update
$BROWSER "$html_file"
while ! inotifywait -e modify "$markdown_file"; do
        update
done