## Description Currently the CI_COMMIT_REF_SLUG is limited to 63 characters. However for some applications (Heroku, LetsEncrypt certificates) this is too long. I am wondering if something could be created that limits the amount of characters. This can be a serious limitation for review apps. Currently I am restricting the length of a branchname in order for my review apps to work. I have seen syntax like: ``` ${CI_COMMIT_REF_SLUG:0:20} ``` ``` $${CI_COMMIT_REF_SLUG:0:20} ``` ``` eval export REVIEW_APP_NAME=${REVIEW_APP_NAME} ``` The problem however is that these do not work in the environment section inside a CI Pipeline. ## Suggestion The ${CI_COMMIT_REF_SLUG:0:20} syntax should be supported for environments as well. ## Additional Details If users want this functionality available in `script`, gitlab~11448658 will need to implement that and as such, ~"Category:Runner Core" label has been added for now if that is the case for final implementation decision. ### Proposal https://gitlab.com/gitlab-org/gitlab/-/issues/24659#note_1350635985 - Support variable truncation syntax on the GitLab side gitlab~10690709 - Support variable truncation syntax on the Runner side gitlab~11448658 * This can include support for other shell environments, or it can be separated into another issue. (The syntax is already supported in `bash` and `sh`.)