[jira] [Commented] (VELOCITY-874) Subtraction doesn't work as expected

["Sergiu Dumitriu (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/VELOCITY-874?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15275916#comment-15275916 ] 

Sergiu Dumitriu commented on VELOCITY-874:
------------------------------------------

Probably because {{-}} is a valid variable name character:

{noformat}
#set ($some-var = 42)
$some-var -> 42
{noformat}


> Subtraction doesn't work as expected
> ------------------------------------
>
>                 Key: VELOCITY-874
>                 URL: https://issues.apache.org/jira/browse/VELOCITY-874
>             Project: Velocity
>          Issue Type: Bug
>         Environment: VTL in user macro in Atlassian Confluence 5.9.4
>            Reporter: Alexander Rosenberg
>
> This works as expected:
> {noformat}
> ## @noparams
> #set ($n = 5)
> #set ($m = $n+1)
> <p>$m</p>
> {noformat}
> Output: {{<p>6</p>}}
> However, subtraction doesn't work:
> {noformat}
> ## @noparams
> #set ($n = 5)
> #set ($m = $n-1)
> <p>$m</p>
> {noformat}
> Output: {{<p>$m</p>}}
> From [SO Q&A #15448108|http://stackoverflow.com/questions/15448108/subtraction-is-not-working-with-velocity-template], it appears that this behavior is due to the parser treating the hyphen/dash/minus-sign as part of the identifier, but certainly an exception should be made for when the "identifier" ends with only digits and/or hyphens.



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