find jira items since the last tag

release-items.sh

#!/bin/sh

# Usage:
#       ./release-items.sh last-release-tag jira_number_prefix [-v]

jira_prefix=$1
since_tag=$2

if [ -z "$3" ]; then
  lines=$(git log --oneline --first-parent  "$since_tag"..HEAD | cut -d ' ' -f 5- | sed  -nE "s/.*((:?${jira_prefix})\-[0-9]{3,6}).*/\1/p")
else
  lines=$(git log --oneline --first-parent  "$since_tag"..HEAD | cut -d ' ' -f 5-  | grep "${jira_prefix}\-")
fi

printf "\n\nNumber of items in release:"
echo "$lines" | wc -l
printf "\n%s\n" "$lines";