From 9e005ac27fff43b0986326961c286318faee184d Mon Sep 17 00:00:00 2001
From: sawinglogz <3787776-sawinglogz@users.noreply.gitlab.com>
Date: Sat, 21 Mar 2020 23:42:32 +0000
Subject: [PATCH] Update CONTRIBUTING with branch character limitations.

Also update the mirroring URL to Gitlab's new (September) requirement.
---
 CONTRIBUTING.md | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index abcdd562..99a25e9a 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -24,13 +24,14 @@ Setting aside the religious wars that can arise over any development methodology
 0. Create your own fork of the repo and configure it to stay up-to-date with the upstream repo.
 	* Go to https://gitlab.com/pholy/OSCAR-code and click on **Fork** in the top right of the project page.
 	* In your fork's sidebar, go to **Settings > Repository** then click on **Expand** for "Mirroring repositories".
-	* Enter "https://gitlab.com/pholy/OSCAR-code" for the repository **URL**, make sure the mirror is set to **Pull** and then click **Mirror repository**.
+	* Enter "https://gitlab.com/pholy/OSCAR-code.git" for the repository **URL**, make sure the mirror is set to **Pull** and then click **Mirror repository**.
 
 1. Create a branch to work on your feature or bugfix:
 
         git clone https://gitlab.com/my-repo/OSCAR-code.git
         cd OSCAR-code
         git checkout -b my-branch
+    **Note:** Because OSCAR includes the branch name in its [version string](https://semver.org/spec/v2.0.0.html), **the branch name must contain only alphanumeric characters or "-"** ([0-9a-zA-Z-]).
 
 2. Write your code, committing to your branch as you go, using `git add` and `git commit -a`.