[jira] Created: (VELOCITY-684) Passing a map literal to a macro call forbids altering the map in any way, while maps bound to an actual parameter may be changed

[Sergiu Dumitriu (JIRA)]

Passing a map literal to a macro call forbids altering the map in any way, 
while maps bound to an actual parameter may be changed
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                 Key: VELOCITY-684
                 URL: https://issues.apache.org/jira/browse/VELOCITY-684
             Project: Velocity
          Issue Type: Bug
          Components: Engine
    Affects Versions: 1.6.1
            Reporter: Sergiu Dumitriu


For example, with the following macro:

#macro(changeMap $map)
  Before: $map.someKey
  #set($map.someKey = 'new value')
  After: $map.someKey
#end

This call works as expected:

#set($actualMap = {'someKey' : 'old value'})
#changeMap($actualMap) => old value, then new value

But this one doesn't:

#changeMap({'someKey' : 'old value'}) => old value, then again old value

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