Match more complex branch namse

build/config/PublishData.json

@@ -7,7 +7,7 @@
             "vsix": [ "https://dotnet.myget.org/F/roslyn/vsix/upload" ],
             "channels": [ "dev15.5", "dev15.5p1" ]
         },
-        "refs/heads/dev/jaredpar/fix-publish": {
+        "dev/jaredpar/fix-publish": {
             "nugetKind": "PerBuildPreRelease",
             "version": "2.6.*",
             "nuget": [ "https://dotnet.myget.org/F/roslyn/api/v2/package" ],

src/Tools/MicroBuild/publish-assets.ps1

@@ -134,6 +134,17 @@ function Test-Member($obj, [string]$name) {
     return $value -ne $null
 }
 
+# This script is interested in the short branch name: master, dev15.x, etc ... But several
+# of our publish operations specify fully branch names like /refs/heads/master. Normalizing
+# those out to the short branch name here.
+function Normalize-BranchName([string]$branchName) {
+    switch -regex ($branchName) { 
+        "refs/heads/(.*)" { return $matches[1] }
+        "refs/pull/\d*/(.*)" { return $matches[1] }
+        default { return $branchName }
+    }
+}
+
 try {
     . (Join-Path $PSScriptRoot "..\..\..\build\scripts\build-utils.ps1")
     $nuget = Ensure-NuGet
@@ -153,6 +164,7 @@ try {
         exit 1
     }
     elseif ($branchName -ne "") {
+        $branchName = Normalize-BranchName $branchName
         if (-not (Test-Member $data.branches $branchName)) { 
             Write-Host "$branchName is not listed for publishing"
             exit 0