Scenario: feature-branch-from-main

The monorepo's main has a commit that upstream's main lacks, and the monorepo is on a branch cut from it. Upstream protects its main, say, so changes only go in through a PR from another branch.

Monorepo (vendor/a/): cloned at seed on main, then a local commit, then the branch feature without further changes.
Upstream: only main, at seed.

The splice didn't change on feature, but feature has a commit that upstream's main lacks. That's what counts, as for a PR: push creates feature upstream with it, ready for one (#150).

Output

setup.bash builds this state:

$ build_scenario scenario_feature_branch_from_main

$ git splice status
On branch feature

  new, ahead 1  vendor/a  push creates the branch

$ git splice log
===  vendor/a (upstream has no 'feature' branch -- compared with 'main')
< e859a6b local change  (Test <test@example.com>)

$ git splice diff --stat
===  vendor/a
 file.txt | 1 +
 1 file changed, 1 insertion(+)

$ git splice push vendor/a
??   vendor/a: upstream has no 'feature' branch yet -- this push creates it
ok   vendor/a: pushed e859a6b to feature

$ git splice status
On branch feature

  up to date  vendor/a

Output​

Output