Link/mention picker should not pop up when typing inside a word

[nickvergessen]

Try to post something like:

Works now in direction A/B

The / brings up the link picker:

Pressing ESC not only closes the link picker but also unfocuses the chat input of Talk.

Same happens with @ inside words.

From my perspective it would be the best to only start the picker with a leading whitespace, linebreak, empty (beginning of message). Showing it in the middle of a word is quite annoying.

Should also take a look into the ESC handling so when it cancels Tribute, it does not additionally cancel the NcContentEditable focus. moved to other issue and solved

cc @ShGKme @Antreesy

[Antreesy]

From what I see in the library code, there's no way to use regex for this as trigger for mentions. Manual trigger with /(?:^|\s)@$/ instead of @ doesn't seem to behave properly
One more reason to fork the lib

[Antreesy]

Regression comes with 0bf2293