Semtag does not fail if git tag command fails to tag the commit

[spirosekulovski]

There are some cases where a tag already exists, so when the git tag command tries to tag HEAD, it fails with the message fatal: tag '' already exists. However, the script doesn't exit 1 so the CI pipeline continues.

% bash semtag final -s patch
fatal: tag 'v0.0.4' already exists
v0.0.4 pushed to origin

This is a very simple fix: just add || exit 1 to the git tag -a $__version -m "$__message" command on line 516:

semtag/semtag

Line 516 in f5b2c67

git tag -a $__version -m "$__message"

git tag -a $__version -m "$__message" || exit 1

Git's error message is satisfactory so no need for additional logic just for a custom messages.

There is another option: add set -o errexit to the top of semtag. However, I believe this will require additional changes to the semtag to make it work correctly.