Add <contentvariable> to circuit xml

[starkraving2002]

Currently to make a contentvariable that is composited through multiple <include/>s or <do/>s, you use the "contentvariable" attribute and 'append="true"'. While this is functional it does require a lot of code repetition and everything has to be coded perfectly or the variable is created properly.

Proposal: Add a <contentvariable> block tag that can surround anything else in the fuseaction and would create a buffer output consisting of any child element that generated content.

<contentvariable name="strVarname" [append="true|false*" prepend="true|false*" overwrite="true*|false">...</contentvariable>

[starkraving2002]

oops, that should be 'or the variable is not created properly'

[scorfield]

I think it's too late to add a new core verb for 5.1 but this is definitely a good idea for 6.0.

[scorfield]

Could this be implemented as a custom lexicon perhaps?

[scorfield]

Too big for 5.5 - defer to 5.6.

[airforce1]

thanks true air force ones

[add]

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