quarto listing filters return nothing when using any upper case characters

[e-kotov]

          I think this must be an issue introduced perhaps in a new release of Quarto? I don't see it in some older versions like:

https://web.archive.org/web/20230329074857/https://quarto.org/docs/extensions/

I think it is worth opening a new issue to track this.

Originally posted by @dragonstyle in #6755 (comment)

The issue

When using Quarto listings with filters, in some websites the filter returns no matches if the user inputs Any Upper Case Characters.

Where the problem exits

• https://m.canouil.dev/quarto-extensions/ with source here https://github.com/mcanouil/quarto-extensions
• https://albert-rapp.de/blog with source here https://github.com/AlbertRapp/Blog-1
• http://www.ekotov.pro/mitma-data-issues/ with source here https://github.com/e-kotov/mitma-data-issues

Where it does not exist and works as expected with Any case of Letters

• https://mine-cetinkaya-rundel.github.io/quarto-tip-a-day/ with source here https://github.com/mine-cetinkaya-rundel/quarto-tip-a-day

Frankly, comparing the source and yaml headers of all these sites, I could not figure out what the reason for this behaviour is. Perhaps as suggested by @dragonstyle , this may be an issue that appears with certain versions of quarto.

[dragonstyle]

The problem exists in:
quarto-1.6.4
quarto-1.6.9
quarto-1.5.56

I think this is likely something new. Mine's tip a day was generated with quarto-1.0.37 fwiw.

Also visible on
https://quarto.org/docs/extensions/

[cderv]

This comes from a patch in list.js that we imported in Quarto at a2e298e for 1.5.4. It solves #8435 but too strong because it will remove the toLowerCase()

We need to patch list.min.js differently so that #8435 is still solved, but it does not break the search.

[dragonstyle]