AzureRmWebDeployment File transform unexpected characters on multi-line comments

Troubleshooting

Checkout how to troubleshoot failures and collect debug logs: https://docs.microsoft.com/en-us/vsts/build-release/actions/troubleshooting

Environment

VSTS with private Agent

Issue Description

While deploying an app with AzureRmDeployment with file transform activated, we are expiriencing and issue on the transformed web.config files. An un expected character --> is appearing after multi line comments in the original config file.

After the transformation and deployment, what we have in the actual site is the following.

It started happing as of thi commit proxy support (#5379) AzureRmDeployment task version 3.3.24

[vincent1173]

@AlexGuirao , we identified the root cause and resolved the issue. We planned for hot-fix which will take a day or two. In the meantime, you can unblock yourself by removing comments from config files.

[frankfuu]

hi @vincentdass, this seems to be fixed in 3.3.25 of Azure App Service Deploy.

Thanks!

2017-11-10T01:05:31.6765238Z ##[section]Starting: Deploy App Service
2017-11-10T01:05:31.6921483Z ==============================================================================
2017-11-10T01:05:31.6921483Z Task         : Azure App Service Deploy
2017-11-10T01:05:31.6921483Z Description  : Update Azure WebApp Services On Windows, Web App On Linux with built-in images or docker containers, ASP.NET, .NET Core, PHP, Python or Node based Web applications, Function Apps, Mobile Apps, Api applications, Web Jobs using Web Deploy / Kudu REST APIs
2017-11-10T01:05:31.6921483Z Version      : 3.3.25
2017-11-10T01:05:31.6921483Z Author       : Microsoft Corporation
2017-11-10T01:05:31.6921483Z Help         : [More Information](https://aka.ms/azurermwebdeployreadme)
2017-11-10T01:05:31.6921483Z ==============================================================================
2017-11-10T01:05:38.5273382Z XML variable substitution applied successfully.