Answer by HolyBlackCat for How to replace a char within a string in VSCode find/replace?

I do some regex and i can find all instances of some-text-that-looks-like-this, i.e.

(some-text-.*)\b

After that, do CtrlShiftP -> Select All Occurences of Find Match to select all matching words.

Then click Find in Selection button (the button with three horizontal lines in the "find" popup).

Then just type - in "find" and _ in "replace", and click Replace All.