[BUG] [Linter] False positive duplicate attribute in if … else statement

[craiga]

• [X] I'm on the latest version of djLint
• [X] I've searched the issues
• [X] I've read the docs

System Info

• OS: macOS 13.3.1 (a)
• Python Version 3.11.2
• djLint Version 1.27.2
• template language: Django

Issue

It looks like djLint is finding a duplicate attributes in the if and else clause of an if statement in a Django template.

How To Reproduce

Given this test.html:

<button {% if user in project.bookmark_users.all %}
            class="bookmark bookmark--on" title="Bookmarked; click to remove bookmark"
        {% else %}
            class="bookmark bookmark--off" title="Not bookmarked; click to add bookmark"
        {% endif %}
        id="bookmark-toggle-{{ project.id }}"></button>

…djLint reports a duplicate class attribute:

❯ djlint test.html
Linting 1/1 files ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 00:00    

test.html
──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
H037 1:52 Duplicate attribute found. class

Linted 1 file, found 1 error.

Contents of .djlintrc/pyproject.toml [tool.djlint]

[tool.djlint]
format_attribute_template_tags = true

[christopherpickering]

Thanks @craiga. Can you help me develop this a bit?

Would any of these be considered a duplicate?

<!-- one inside, one outside -->
<button {% if %} class="" {% endif %} class="">
</button>
<!-- one in else, one outside -->
<button {% if %} id="" {% else %} class="" {% endif %} class="">
</button>
<!-- one in if, one outside -->
<button {% if %} class="" {% else %} id="" {% endif %} class="">
</button>

[craiga]

@christopherpickering I'd say all of those should be reported as duplicates. Is that possible?

[craiga]

That is, you should be able to have one in each of if and else, but not one inside if and another outside if.

[christopherpickering]

cool!