get_taxonomy_term does not handle terms with special characters

[tzinm]

Bug Report

Environment

Zola version: 0.20.0

Expected Behavior

The get_taxonomy_term function should correctly retrieve terms that contain special characters, such as accents.

Current Behavior

When passing a term with special characters (e.g., "acción") to get_taxonomy_term, Zola returns the following error:

Error: Reaseon: `get_taxonomy_term` received an unknown term: acción

I attempted to normalize the term using [slugify](https://keats.github.io/tera/docs/#slugify), but the issue persists.

Step to reproduce

1. Create a taxonomy (e.g., tags) containing a term with special characters (acción).
2. Use get_taxonomy_term(kind="tags", term="acción") in a
3. Run Zola and observe the error.

This issue was initially discussed in the Zola forum: Conditionally displaying RSS Feed icons for tags based on feed availability

[edgarogh]

I've tried looking into this but I cannot reproduce your issue. Do you have a minimal reproducible example? (as repo or zip archive)

Could it be possible that the acute O character is not the same in your page and in your get_taxonomy_term invocation? There are multiple Unicode characters that are distinct and look like this. For instance, these 2 are different:

ó, ó

The first is a single codepoint, the second one is a combining character and the letter o.

[tzinm]

Hello @edgarogh, thank you for taking the time to review this issue.

As I have forked the theme I use in my personal blog to contribute with small improvements, I have created a branch where the bug is easily replicated.

The only commit of this branch contains a modified list.html file.

When you run zola serve you will see the error.

Building site...
Checking all internal links with anchors.
> Successfully checked 96 internal link(s) with anchors.
-> Creating 70 pages (0 orphan) and 19 sections
Error: Failed to serve the site
Error: Failed to render a list of tags page.
Error: Reason: Failed to render 'tags/list.html'
Error: Reason: Function call 'get_taxonomy_term' failed
Error: Reason: `get_taxonomy_term` received an unknown term: anàlisi de dades

[edgarogh]

Indeed, I can reproduce. I'll investigate 😉