git alias for tagging commits with Jira ticket IDs

.gitconfig

[alias]
    # commit with Jira ticket ID tag in commit message.
    # current branch name has to start with a valid Jira ticket ID, in upper case.
    c = "!f() { \
        if [[ -z $1 ]]; \
        then \
            echo "Error: No commit message provided."; \
            exit 1; \
        else \
            local ticketId=$(git rev-parse --abbrev-ref HEAD | grep -Eo "^[A-Z]+-[0-9]+"); \
            if [[ -z $ticketId ]]; \
            then git commit -m $1 ${@:2}; \
            else git commit -m \"$ticketId $1\" ${@:2}; \
            fi; \
        fi; \
    }; f"

usage.sh

$ git branch
* SF-123
  master
$ git c "Shaving yaks"
[SF-123 fd1b2e6] SF-123 Shaving yaks
 1 file changed, 1 insertion(+), 1 deletion(-)