@Roberts-Rozis Kudos. I want this feature too. I want to search my source code project, shared, and library folder to one level deep only because the library folder is very wide and deep, quadrupling the search time.

Hello, @coises and All, I understand that focusing on N++ buffers, instead of on saved files on disk, is not really appropriate for your multithreaded approach ! You said : I am more inclined to raise a warning box telling the user that some of the files to be searched are currently open in Notepad++, and the search results (and modifications, when I get Replace in Files done) will apply to the stored files, not to the edits in progress in Notepad++. So, given, your constraints, I totally agree ! That seems the more simple and obvious solution, with a Cancel button in case some concerned and opened files are dirty, in current N++ session On the other hand, you said : I wonder if any of this works properly when users have multiple instances of Notepad++ open and the files are open in a different instance than the one doing the search? I personally mainly use N++ in a N++ mono instance so I can’t speak properly of that case. But I agree with you that managing several instances must be a challenge for the Find in Files or Replace in Files feature ! Best Regards, guy038