Jenkins Pipeline - loop over multi string variable with groovy

[John]

I'm trying to loop over a var that contains multiple strings (file paths), 
and then run a shell script against each one. But for some reason 
everything i try loops over every single letter of the string. Here is my 
code:

def call(Map config) {

  node('terraform-slave') {
    cleanWs()
    checkout scm

    stage('Plan') {
      commitChangeset = sh(returnStdout: true, script: 'git diff-tree 
--no-commit-id --name-only -r HEAD').trim()
    }
    stage('EchoToVerify') {
      tfvars = commitChangeset.replaceAll("terraform.tfvars", "")
      echo tfvars
    }
    stage('Loop') {
      loop(tfvars)
    }
  }
}

def loop(list) {
  list.each {
    sh "(cd ${it}; cat terraform.tfvars)"
  }
}



If you see the EchoToVerify stage, that works fine. Multiple file paths are 
echo'ed, like so:

/file/to/dir1
/file/to/dir2
/file/to/dir3

But when the Loop starts, it loops against each letter.. f, i, l, e, etc....

The only way I have been able to get it work is is by doing this:

def loop(list) {
  for (dir in [list]) {
    sh "(cd ${it}; cat terraform.tfvars)"
  }
}

However it only works when there is one value in the variable. It seems to 
want to iterate over ${it} immediately, before going to the next shell 
command (cat terraform.tfvars). It seems like it tries to "cd" to the next 
directory immediately.

Thanks for the help!




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