Womtool Fails to Validate WDL 1.1/1.2 but Succeeds with version development on Ubuntu

[LuckaHel]

Bug: womtool fails to validate WDL files with version 1.1 or 1.2

I am encountering a consistent and reproducible issue where womtool fails to validate WDL files when the version is declared as 1.1 or 1.2. The error occurs immediately after the version declaration:

ERROR: Finished parsing without consuming all tokens.

version 1.2 
^

However, the exact same WDL file validates successfully if the version is declared as development. This behavior persists across different Womtool JAR versions and even when attempting validation via Docker.

Environment

• Operating System: Ubuntu 24.10 (Oracular Orca)
• Java Version: openjdk 17.0.15 2025-04-15
• Womtool JARs tested: womtool-87.jar, womtool-90.jar
• Womtool Docker Image tested: broadinstitute/womtool:87
• Locale: LANG=en_US.UTF-8
• Other troubleshooting:
  • Eliminated hidden characters/encoding issues by generating the WDL file using echo directly in the shell.
  • Reinstalled Java, Cromwell, Womtool, and Docker.
  • Issue is reproducible across multiple scripts.

Example WDL Script

version development

workflow minimal_test {
  input {
    String? optional_var = None
  }
}

Observed Behavior

• version 1.0: Fails as expected due to None not being recognized.
• version 1.1 or 1.2: Fails with the following error:

  Finished parsing without consuming all tokens.
  
  version 1.1 
  ^
  

• version development: Validation succeeds .

Command Used

java -jar ~/tools/womtool-90.jar validate test.wdl

Let me know if additional details or reproduction steps are needed.