[text] StringSubstitutor checks for cycles even if substitution in variables is disabled

[Cyril de Catheu]

Hello,

I'm trying to use StringSubstitutor. Substitution in variables (recursive
substitution) is disabled.
When I run with a variable cycle, I don't expect an infinite loop because
recursive substitution is disabled. But I still get the exception:
java.lang.IllegalStateException: Infinite loop in property interpolation of
my template ${cycle}: cycle.

See example code below.

import java.util.Map;
import org.apache.commons.text.StringSubstitutor;

public class TestCycles {

  public static void main(String[] args) {
    final Map<String, Object> cycleMap = Map.of("cycle", "${cycle}");
    final StringSubstitutor sub = new StringSubstitutor(cycleMap)
        .setEnableSubstitutionInVariables(false);
      String res =  sub.replace("my template ${cycle}");
  }
}


Is this the expected behavior, or do you think this should be fixed?

Thanks.

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Cyril de Catheu
Software Engineer
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