Failed to generate search index for zh-Hans

[Gabirel]

Bug Report

Environment

Zola version: zola 0.20.0 (custom build with: cargo build --release --features indexing-ja --features indexing-zh)

Expected Behavior

Success to generate zh-Hans search index.

Current Behavior

It only works for Japanese, but not for zh-Hans. I believe it may be a bug for zola.

$ ls public/ | grep search_ 
search_index.en.json
search_index.ja.json

Build for zh-Hans

$ RUST_BACKTRACE=1 /Users/apple/zola/target/release/zola serve
Building site...
Checking all internal links with anchors.
> Successfully checked 0 internal link(s) with anchors.
-> Creating 23 pages (0 orphan) and 11 sections
Error: Failed to serve the site
Error: Tried to build search index for language zh-Hans which is not supported

Step to reproduce

1. enable zh-Hans language and its corresponding search index flag
2. build zola with ja and zh index feature with: cargo build --release --features indexing-ja --features indexing-zh

$ cargo build --release --features indexing-ja --features indexing-zh
    Finished `release` profile [optimized] target(s) in 0.50s
warning: the following packages contain code that will be rejected by a future version of Rust: quick-xml v0.17.2
note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
$ du -sh ./target/release/zola
110M	./target/release/zola

3. run custom built zola serve, and get errors.

Reference

• commit for building: 379f6c1f622ffeb2793c11301efbcf6f49b97138
• theme I am using: tabi

[Keats]

I think the library expects only zh as lang

[Gabirel]

Since I didn't find any specs for language code on this post, I assume Zola uses the same language code with tabi theme.

Currently tabi use ISO 639-1 Language Code List, which use zh-Hans.

I suspect that the library only takes zh instead of zh-Hans or zh-Hant as well. However, tabi fails to show the correct translation to that language code. If it were a bug in tabi, I would create another issue there.

Language code for tabi could be found in here: https://github.com/welpo/tabi/tree/main/i18n