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https://issues.apache.org/jira/browse/VELOCITY-901?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16608862#comment-16608862
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Thomas Mortagne commented on VELOCITY-901:
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This is actually documented in the Velocity 2 release note
(http://velocity.apache.org/engine/2.0/upgrading.html)
{noformat}
* the hypen ( - ) cannot be used in variable names anymore
{noformat}
But yes I'm not super happy about it either.
> hyphen in identifiers cause parse error
> ---------------------------------------
>
> Key: VELOCITY-901
> URL: https://issues.apache.org/jira/browse/VELOCITY-901
> Project: Velocity
> Issue Type: Bug
> Components: Engine
> Affects Versions: 2.0
> Reporter: Mark Newton
> Priority: Major
> Attachments: err, example2.vm.snip, run.sh
>
>
> Upon upgrading to Velocity 2.0 from a very old version (1.4), hyphens in
> identifiers in templates throw a ParseException.
> To verify what was happening, I did a clean install of velocity 2.0 to test
> your example code. After running the unmodified "example2.vm" successfully I
> added an identifier with a hyphen and the parse error occurred.
> Apologies if I am missing something (e.g. spec change on identifiers). If
> this is an issue that will take a while to fix, please let me know so that I
> can change out the hyphens to underbars in id's in my template sets.
> Attached are: 1) code snippet 2) parse exception msg 3) cl used to invoke
> velocity 2.0 upon example2.vm
> Best Regards
> --------------------
> 1) code snippet
> #set($test-var-w-hyphen = "test")
> test-var-w-hyphen : $test-var-w-hyphen
> ------------------------------
> 2) Parse exception
> [main] ERROR org.apache.velocity.parser - example2.vm: Encountered "-" at
> line 20, column 11.
> Was expecting one of:
> "[" ...
> <WHITESPACE> ...
> <NEWLINE> ...
> "=" ...
> --------------------------
> 3) Command Script
> #/bin/bash
> java -cp
> .:/home/test-a/.ant/lib/commons-lang3-3.8.jar:/home/test-a/.ant/lib/slf4j-api-1.7.25.jar:/home/test-a/.ant/lib/velocity-engine-core-2.0.jar:/home/test-a/.ant/lib/velocity-engine-scripting-2.0.jar:/home/test-a/.ant/lib/slf4j-simple-1.7.25.jar
> org.apache.velocity.example.Example2
>
>
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