Weird HTML entities behavior in repeater item labels

[CalleRosa40]

Short description of the issue

Uppercase umlaut HTML entities (Ö / Ä / Ü) are displayed in repeater item label. The label is pulled from a page's default title field (HTML Entity Encoder text formatter is set). Page is added to repeater via Page field set to "single page".

Expected behavior

Entities should be converted to the actual characters: ÄÖÜ.

Actual behavior

Screenshot:

However, there's more ... If the page's title contains ä, ö, ü or ß, all umlauts are displayed correctly. Just one of these characters suffices to fix all other characters.

Screenshot (notice the final "ß"):

• ProcessWire version: 3.0.42

[kixe]

The regex in class Inputfield should detect uppercase letters too
https://github.com/processwire/processwire/blob/dev/wire/core/Inputfield.php#L1550
solution: change to:
if(strpos($str, '&') !== false && preg_match('/&(#\d+|[a-zA-Z]+);/', $str)) {

[ryancramerdesign]

Thanks I've pushed the suggested fix for this issue to the dev branch. Note that if you are literally inserting HTML entities like Ö into your repeater label, make sure you use the actual character Ö instead, as typing in literal HTML entities in anything in the admin is likely going to result in it getting double-encoded in most cases.