Fix crash when edit_uri is not defined

[eirikrrrr]

Summary:
This fixes a crash that occurs when edit_uri is not defined in mkdocs.yml using the multirepo-plugin.

Problem:
DocsRepo._fix_edit_uri assumes edit_uri is always a string and calls strip() on it.
When edit_uri is None, MkDocs fails with:
AttributeError: 'NoneType' object has no attribute 'strip'

Reproduction:
Run mkdocs serve with a config that uses the plugin and does not define edit_uri.

Fix:

• Handle None or empty edit_uri safely
• Remove leftover debug code
• Add a unit test covering the missing edit_uri case

Validation:

• Reproduced the failure locally
• Ran the relevant unit test successfully

Environment

• OS: Linux
• Python: 3.9.2
• Virtual environment: venv
• MkDocs: <mkdocs, version 1.6.1 from mkdocs-multirepo-plugin/.venv/lib/python3.9/site-packages/mkdocs (Python 3.9)>
• Plugin under test: local editable install from fork
• Command used to reproduce:

mkdocs serve -f ../docs-hub/mkdocs.yml -a 0.0.0.0:8000

References
There is prior context in this repository around related edit_uri and import behavior:

issues/84
pull/75

This PR builds on that context by handling missing edit_uri defensively to avoid runtime crashes.

Images

I did a clean installation of mkdocs in a virtual environment with python3.9 and when running my YAML with the edit_uri configuration mentioned, the error appears for the first time.

If I activate the edit_uri field the error disappears and my repositories load normally

Note: This is my first time contributing to open source, and I apologize in advance if the PR or issue format is not the expected one. I looked for documentation about the preferred format for PRs and issues, but I could not find any 🐈‍⬛

[github-actions]

Version Number Check

Version has been updated in pyproject.toml.

[Copilot]

Pull request overview

Fixes a MkDocs crash in the multirepo plugin when edit_uri is unset (None) by making DocsRepo._fix_edit_uri defensive, and adds a regression unit test to cover the scenario.

Changes:

• Guard DocsRepo._fix_edit_uri against None/empty values to avoid calling string methods on None.
• Add a unit test ensuring edit_uri=None normalizes to an empty string.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.

File	Description
mkdocs_multirepo_plugin/structure.py	Makes edit_uri normalization resilient to missing values.
tests/unittests.py	Adds regression coverage for edit_uri=None input.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.