Azure pipeline runtime replace expression

Question

I have two identical replace statements in the azure pipeline yaml file

 - script: echo ${{ replace('refs/heads/origin', 'refs/heads', 'origin') }}
 - script: echo $[ replace('refs/heads/origin', 'refs/heads', 'origin') ]

except for one is a runtime expression while the other one is a compile time expression.

While the compile time expression works fine run time expression is giving me following error

line 1: replace('refs/heads/origin', 'refs/heads', 'origin') : syntax error in expression (error token is "('refs/heads/origin', 'refs/heads', 'origin') ")

How do I make runtime replace expression works fine?

Yan Sklyarenko · Accepted Answer · 2021-07-21 11:38:45Z

3

You should use a variable for this:

variables:
  runtimeTest: $[ replace('refs/heads/origin', 'refs/heads', 'origin') ]

Then you can reference it in the script part with no errors:

steps:
- script: echo $(runtimeTest)

answered Jul 21, 2021 at 11:38

Yan Sklyarenko

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6 Comments

Neo Over a year ago

Cool, it works with hardcoded values, thank you. Can you tell how can I do with PredefiinedVariables $[replace(variables['System.PullRequest.TargetBranch'], 'refs/heads', 'origin')] returns refs/heads/master

Yan Sklyarenko Over a year ago

It should work with the syntax you use. Note that according to the docs for System.PullRequest.TargetBranch : "This variable is initialized only if the build ran because of a Git PR affected by a branch policy. This variable is only available in a YAML pipeline if the PR is affected by a branch policy." learn.microsoft.com/en-us/azure/devops/pipelines/build/…

Palec Over a year ago

So are runtime expressions supported only in variables? I need to call the format() function with a runtime variable and a compile time variable (from the each loop); is there no way to do that?

Yan Sklyarenko Over a year ago

@Palec it's not quite clear what you're trying to achieve. It would be great if you shape it into a separate question.

Palec Over a year ago

IIRC, I gave up and used a script for that, @Keab42.

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