how to allow html tag in redmine wiki

Hello,

My wiki settings are such that it uses Markdown (and not Textile) formatting.

My goal here is to be able to color text.

I found in the user guide for markdown formatting
that html tags must be allowed for this to work:

Note: HTML tags need to be allowed to use the HTML tag (<span>). See #15520-16 and #15520-17 for details.

I went over the linked issues but I only saw warnings on why this should not be done for security reasons.
I have to admit I did not read the entire issues.

At the top of the user guide it also says:

Currently HTML tags are not allowed by default. See #15520 and #20497 for details. For other limitations of the current Markdown formatting see #16373 and #21443.

But I can't find how to allow HTML tags.
Is there a configuration/setting for this ?

Or does the code need to be patched e.g. https://www.redmine.org/projects/redmine/repository/revisions/14449/entry/trunk/lib/redmine/wiki_formatting/markdown/formatter.rb#L122

Thanks in advance for your help.

Replies (6)

RE: how to allow html tag in redmine wiki - Added by Ivan Cenov about 6 years ago

You may use macro html this way:

{{html
your html content
}}

Example

before html
{{html
<b>this is bold</b> <i>this is italic</i> This is normal
}}after html

The macro should be inserted in <path_to_redmine>/lib/redmine/wiki_formatting/macros.rb somewhere among other macros there:

      desc "Insert html" + "\n\n" +
           "  !{{html\n<HTML CODE HERE>\n}}" 
      macro :html do |obj, args, text|
        text.html_safe
      end

Don't forget to restart Redmine.

RE: how to allow html tag in redmine wiki - Added by Tuan-Tu Tran about 6 years ago

Hello

Thank you for your answer.

However I was hoping for something more integrated with the markdown, as described here in the user documentation:
https://www.redmine.org/projects/redmine/wiki/RedmineTextFormattingMarkdown#Color

with an html macro as you proposed, I guess I'd have to do things like:

{{html
<ul>
<li> <span style="color:red">red</span> <span style="color:green">green</span>  </li>
<li> ... </li>
</ul>
}}

to achieve the same list, which is much less convenient.

The note in the user documentation

Note: HTML tags need to be allowed to use the HTML tag (<span>). See #15520-16 and #15520-17 for details.

suggests there's a straightforward way to just allow the HTML tag <span>

I just can't seem to find it and that was more the object of my initial question.

Thanks again.

2018-11-05_10h23_55.png (17.3 KB) 2018-11-05_10h23_55.png

RE: how to allow html tag in redmine wiki - Added by Tuan-Tu Tran about 6 years ago

Hello,

I'm bumping up this question.

I hope someone can help.

Thanks!

RE: how to allow html tag in redmine wiki - Added by Odare Abisam Odare over 5 years ago

Hi!

You can change it here

redmine/lib/redmine/wiki_formatting/markdown/formatter.rb

I changed the boolean from true to false for filter_html

 def formatter
          @@formatter ||= Redcarpet::Markdown.new(
            Redmine::WikiFormatting::Markdown::HTML.new(
              :filter_html => false,
              :hard_wrap => true
            ),
            :autolink => true,
            :fenced_code_blocks => true,
            :space_after_headers => true,
            :tables => true,
            :strikethrough => true,
            :superscript => true,
            :no_intra_emphasis => true,
            :footnotes => true,
            :lax_spacing => true,
            :underline => true
          )
        end

Then restart redmine

RE: how to allow html tag in redmine wiki - Added by Tuan-Tu Tran over 4 years ago

Thanks.

I've updated the documentation accordingly:
https://www.redmine.org/projects/redmine/wiki/RedmineTextFormattingMarkdown/diff?utf8=%E2%9C%93&version=26&version_from=24&commit=View+differences

Now that I re-read this, it was indeed pointed out in #15520#note-16 but it was not very explicit:

For the Markdown implementation see source:/trunk/lib/redmine/wiki_formatting/markdown/formatter.rb@14449#L122, which tells the Redcarpet gem to filter out any HTML from the user input completely.

RE: how to allow html tag in redmine wiki - Added by Dennis Bindernagel about 2 years ago

Can someone please also post a solution for the "CommonMark Markdown (Github Flavored) - experimental" formatter.
The mentioned file looks completely different and I am lost at to what needs to be changed. Thank you!

(I'm switching from Textile to Markdown and from what I gathered the new "CommonMark Markdown" will eventually become the default Markdown "flavour" for Redmine. So I want to directly use it instead of the current "default" Markdown.)

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