Running git cliff with --prepend requires '-u' or '-l' to be specified

[metaclips]

Describe the bug
Git cliff requires -u or -l flags when commit range and --prepend is used.

To Reproduce
Steps to reproduce the behavior:

1. Run

git cliff start_commit..end_commit --prepend CHANGELOG.md

2. See error

ERROR git_cliff > Argument error: `'-u' or '-l' is not specified`

Expected behavior
Command should run fine with CHANGELOG.md file prepended with the commits.

Running

git cliff start_commit..end_commit  --output CHANGELOG.md

runs pretty fine but creates a whole new entry deleting recent changelogs which really isn't what I want :(.

System (please complete the following information):

• OS Information: macOS 12.2.1
• Project Version: git-cliff 0.6.1

Additional context
Add any other context about the problem here.

[orhun]

Hello, thanks for reporting this!

It is fixed in 1bacc7f 🐻

[metaclips]

Nice. Thanks!

[bukowabot]

Not sure if this is a bug but if you unset GIT_CLIFF_PREPEND then it works.

+ : GIT_CLIFF_CONFIG: project-rp-npm/cliff.toml
+ : GIT_CLIFF_INCLUDE_PATH: 'project-rp-npm/**'
+ : GIT_CLIFF_TAG_PATTERN: 'project-rp-npm-v[0-9].*'
+ : GIT_CLIFF_IGNORE_TAGS: NOPE
+ : GIT_CLIFF_OUTPUT: ./project-rp-npm/CHANGELOG.LATEST.md
+ : GIT_CLIFF_PREPEND: ./project-rp-npm/CHANGELOG.md
+ : GIT_CLIFF_CONTEXT: ./project-rp-npm/GIT_CLIFF_CONTEXT.json
+ unset GIT_CLIFF_OUTPUT
+ git-cliff --context --output ./project-rp-npm/GIT_CLIFF_CONTEXT.json --bump
 ERROR git_cliff > Argument error: `'-u' or '-l' is not specified`

[orhun]

Not sure what's going on there. Do you mean it doesn't work when you don't set it?

[bukowabot]

Yes sorry I included too much data and not enough context. I changed the way I generate and got rid of this error for now. It's for sure somehow bugged but looks like an edge case not worth playing around with for me, for now.
Thank you