per https://adactio.com/journal/11632

Any selected text that includes the last two words of a paragraph fails to match. I’ve tried tweaking the script, but I’m stumped. If you fancy having a go, please have at it.

I'll take a stab.

What I'm seeing is the text that gets passed in the #hash has a non-breaking space character in between the last two words, which matches the markup.

However, in getElementsByText the passed text is being compared to the .innerText or .textContent of the node like so:

(element.innerText || element.textContent || '').replace(/\s+/g, ' ').indexOf(text)

.replace(/\s+/g, ' ') will find any whitespace character, crucially including non-breaking space characters, and replace them all with a regular space.

However text in .indexOf(text) will still have the non-breaking space. So the strings will be technically different and you won't find a match.

Run the same .replace(/\s+/g, ' ') on both the element's innerText and the passed text and it appears to work.

(You might also be able to lose the replace in both places, but I imagine it's there for a reason.)