Publish Jekyll posts using simple git workflow

publish.sh

#!/bin/bash
set -euo pipefail
IFS=$'\n\t'

# Move jekyll draft to post, timestamp it, and start to commit it

# Useage:
#   $ ./publish.sh _draft/cool-article.markdown
# moves the draft to _posts/2017-12-01-cool-article.markdown
# inserts the published date into the "front matter"
# adds the changes and prompts you to commit them

original=$1
shortname=$(basename -s .markdown $original)
newfile="_posts/$(date -I)-${shortname}.markdown";

sed -i "2 i date: $(date '+%F %T %z')" $original
git mv "$original" "$newfile"
git add $newfile
git commit -e -m "publish $shortname"