From d1bd976d70cc975dfd247f9ad2bace58a465c7da Mon Sep 17 00:00:00 2001
From: Simon Heather <32168619+X-Guardian@users.noreply.github.com>
Date: Tue, 2 Jun 2020 21:02:18 +0100
Subject: [PATCH] Set-GitHubRepositoryTopic: Fix Exception When Clear
 'Parameter' is Specified (#216)

This fixes the exception in the `Set-GithubRepositoryTopic` function when the `Clear` parameter is specified.

#### References
https://developer.github.com/v3/repos/#replace-all-repository-topics - Send an empty array ([]) to clear all topics from the repository.

The problem with the existing implementation was that it was creating an array of 1 element, where the element was `$null`.

Fixes #215
---
 GitHubRepositories.ps1 | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/GitHubRepositories.ps1 b/GitHubRepositories.ps1
index 29228af7..842c75ea 100644
--- a/GitHubRepositories.ps1
+++ b/GitHubRepositories.ps1
@@ -1033,12 +1033,18 @@ function Set-GitHubRepositoryTopic
         'Clear' = $PSBoundParameters.ContainsKey('Clear')
     }
 
-    $description = "Replacing topics in $RepositoryName"
-    if ($Clear) { $description = "Clearing topics in $RepositoryName" }
+    if ($Clear)
+    {
+        $description = "Clearing topics in $RepositoryName"
+        $Name = @()
+    }
+    else
+    {
+        $description = "Replacing topics in $RepositoryName"
+    }
 
-    $names = @($Name)
     $hashBody = @{
-        'names' = $names
+        'names' = $Name
     }
 
     $params = @{