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When GIT_BRANCH_NAME names the branch that is already checked out, `git checkout -b` fails and the script reported "Branch already exists" and exited 1, unless --allow-existing-branch was passed. The branch is already in the requested state, so handle it the way the --allow-existing-branch path does and succeed without switching. Applied to the bash, PowerShell and Python scripts. A GIT_BRANCH_NAME naming a different existing branch still fails. Fixes github#5003 Assisted-by: Claude Code (model: Claude Sonnet 5.5, autonomous)
Add a PowerShell twin of the bash test for GIT_BRANCH_NAME naming the checked-out branch, use a case-sensitive comparison in the new PowerShell clause so a differently-cased branch is not mistaken for the current one, and document the behaviour in speckit.git.feature.md. Assisted-by: Claude Code (model: Claude Sonnet 5.5, autonomous)
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Fixes #5003.
Description
With
GIT_BRANCH_NAMEset to the branch that is already checked out,git checkout -bfails, so the feature-branch script reported "Branch already exists" and exited 1 unless--allow-existing-branchwas passed. The branch is already in the requested state, so the bash, PowerShell and Python scripts now succeed without switching, as the--allow-existing-branchpath does. AGIT_BRANCH_NAMEnaming a different existing branch still fails.Testing
Existing and new tests in the git extension suites: 129 passed, 0 failed (the new tests fail without the fix). I did not run the other checks.
uv run specify --helpuv sync && uv run pytestAI Disclosure
AI disclosure: Code and tests written by Claude Code (model: Claude Sonnet 5.5, autonomous), reviewed by two further agent passes.
Assisted-by: Claude Code (model: Claude Sonnet 5.5, autonomous)