Wiki.js uses markdown-it-attrs which interprets curly braces inside
inline math ($...$) as attribute directives, stripping them from the
formula. Additionally, markdown table parsers split cells at both `|`
and `&` characters, breaking formulas containing those symbols.
This fix replaces `{`, `}`, `|`, and `&` inside math expressions with
Unicode Private Use Area placeholders during markdown parsing, then
restores them before passing to KaTeX/MathJax for rendering.
- `<E000>` / `<E001>`: temporary replacements for `{` / `}`
- `<E002>`: temporary replacement for `|` (table cell delimiter)
- `<E003>`: temporary replacement for `&` (table cell delimiter in
multiline tables, used by LaTeX cases/arrays)
The placeholder approach was chosen over HTML escaping because it
preserves LaTeX environments like `\begin{array}` that were broken
by the previous `{{}}` escaping method.
Fixes#1581Fixes#1462
Co-authored-by: Claude <noreply@anthropic.com>
AI-model: kimi-for-coding/k2p6
When using inline math ($e^{-x^2}$) the curly braces are interpreted as
attributes by markdown-it-attrs. Since most of the times they are not
valid attributes they simply get removed.
This patch escapes the curly braces (the default attribute delimiter),
fixing the KaTeX rendering errors.
It would be nice to simply skip that rule for `katex_inline` block types
but as far as I know markdown-it-attrs doesn't have such an option.
Fixes#1581
Hugo Gu
Boris
Edoardo Morassutto
NGPixel