Commit messages in the format "Merge branch ..." fail linting

[ctrom]

Expected Behavior

If a commit message follows the format Merge branch 'Merge-Me', it should pass the linter.

Current Behavior

Messages in the above stated format do not pass the linter. This seems to be a violation of the logic here:
https://github.com/marionebl/commitlint/blob/master/@commitlint/core/src/library/is-ignored.js

Steps to Reproduce (for bugs)

echo "Merge branch 'ctrom-YarnBuild'" | commitlint
No additional configuration required.

Executable	Version
commitlint --version	5.1.1
git --version	2.15.1
node --version	v9.3.0

[StarWar]

It's still not resolved.

[escapedcat]

⧗   input: Merge branch 'ctrom-YarnBuild'
✔   found 0 problems, 0 warnings
    (Need help? -> https://github.com/marionebl/commitlint#what-is-commitlint)

It looks like the mentioned input works fine in the current master.
Which input is failing for you @StarWar?

[xianshenglu]

For me, it's still not work too with @commitlint/[email protected].