Add macro default parameters
----------------------------
Key: VELOCITY-697
URL: https://issues.apache.org/jira/browse/VELOCITY-697
Project: Velocity
Issue Type: New Feature
Components: Engine
Affects Versions: 2.0
Reporter: Byron Foster
Add the ability to specify default parameters to macros, for example:
#macro(foo $x $y="legit")$x$y#end
calling this with #foo(2) would give:
2legit
Any number of default parameters can be specified, but no non-default
parameters can not follow default parameters. Assignment of calling values
begins from left to right and all left over default arguments are assigned
their default values.
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