I want to change some all caps to title case. I tried the example from the Calibre manual, but it's not doing anything.
https://manual.calibre-ebook.com/function_mode.html
Text: <h2>Part Seven: ARTHUR OF BRITAIN</h2>
Find: <([Hh][1-6])[^>]*>.+?</\1>
Mode: Regex-function
Function: Title-case text (ignore tags)
Then hit find, it finds my text, hit replace, it flashes, but nothing changes. I expected the text to become <h2>Part Seven: Arthur Of Britain</h2>
??