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HTML is not parsed from a User Macro in Confluence 7.11.0

We recently upgraded from Confluence Server 7.6.2 to 7.11.0, and we noticed that one of our user macros stopped rendering HTML.

Here is a cut down user macro that shows the exact issue

## This is an example macro
## @noparams

<b>Bold Test</b>
#set($output="<b>Bold Test from var</b>")

It is outputting the following now

Bold Test <b>Bold Test from var</b>

But it should be outputting

Bold Test Bold Test from var

Any ideas how to fix the macro again? Is there a velocity function I need to call?

3 answers

1 accepted

1 vote
Answer accepted

I raised a support ticket and they told me that the variable needs to end in "Html", so that it doesn't get escaped.

So the below code makes it work.

## This is an example macro
## @noparams

<b>Bold Test</b>
#set($outputHtml="<b>Bold Test from var</b>")

 It looks like this has been this way for around 10 years in plugins as seen here:

I didn't read the above answer properly and saw the "@HtmlSafe" annotation instead, and so I thought I couldn't fix it that way, oh well.

Turns out it is documented in the developer confluence docs for plugins: but not in the user macro template syntax:

Support told me it's been this way since v7.7.2 due to a security fix

Woah!!! Good to know. Thanks for posting.

Bill Bailey Community Leader Feb 24, 2021

Thanks for running this to ground. We haven't moved to 7 yet (held back by plugin changes), so good to know as this will bite me in the rear later on. ;-)

This just bit me when I upgraded our non-prod Confluence. I totally forgot about this ... which I apparently commented on a year ago. I've done a bit of testing and the html at the end of the variable can be any casing. So these all work.

  • html
  • hTmL
  • Html
  • HTML
  • HtMl
  • HtML
  • etc.

Also, any variables just named html/HTML/HtML/etc work. I think I may add a disclaimer about this in m Enhanced User Macro Editor app.

0 votes
Bill Bailey Community Leader Feb 19, 2021

Did the render options for the user macro somehow change, so that the output is not rendered?

Are you talking about "Macro Body Processing"? This macro is configured with "No macro body", as the macro doesn't use a body. Regardless I tried all the options, and it didn't make any difference.

0 votes

Could you try like this?

#set(${output}="<b>Bold Test from var</b>")

Makes no difference.

It looks like "#set(${var}" is not valid only "#set($var" works.

By works, I mean valid velocity template, not works as in solves my problem. 

EDIT: clarity.

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