[jira] Created: (VELOCITY-655) Macro parameter value can't be changed inside a macro

[Martin Schwaiger (JIRA)]

Macro parameter value can't be changed inside a macro
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                 Key: VELOCITY-655
                 URL: https://issues.apache.org/jira/browse/VELOCITY-655
             Project: Velocity
          Issue Type: Bug
          Components: Engine
    Affects Versions: 1.6
            Reporter: Martin Schwaiger


I've found a problem when changing parameter values inside a macro using 
velocity engine version 1.6.

In my use case I have to lower the input string first and then do further 
processing.

With version 1.5 of the velocity engine there were no problems to implement 
this use case.

Here is an example which shows the difference between version 1.5 and 1.6:

+Template:+
{code}
#macro(testMacro $x)
#set ($x = $x.toLowerCase())
#set ($y = $x.toLowerCase())
x=$x
y=$y
#end

#testMacro('ABCDEFGHIJKLMNOPQRSTUVWXYZ-Testcase1')
#testMacro("ABCDEFGHIJKLMNOPQRSTUVWXYZ-Testcase2")
{code}

+Result with Velocity Engine 1.5:+
{code}

x=abcdefghijklmnopqrstuvwxyz-testcase1
y=abcdefghijklmnopqrstuvwxyz-testcase1
x=abcdefghijklmnopqrstuvwxyz-testcase2
y=abcdefghijklmnopqrstuvwxyz-testcase2
{code}

+Result with Velocity Engine 1.6:+
{code}

x=ABCDEFGHIJKLMNOPQRSTUVWXYZ-Testcase1
y=abcdefghijklmnopqrstuvwxyz-testcase1
x=ABCDEFGHIJKLMNOPQRSTUVWXYZ-Testcase2
y=abcdefghijklmnopqrstuvwxyz-testcase2
{code}

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