"Search in all files" using XPATH

[fraschfn]

Having the option to perform an XPATH query on a set of files would be useful. On the "input" side an option to specify a folder/files pattern, current project/folder/solution, and/or "use selected files/folders" would be great. The results window should have a column containing the filename and optionally the folder/project. I think this could be useful for many users. My personal use case was to determine a set of values for a specific tag that are frequently used. Right now I have to select a file, perform the query, select the next file, perform the query and so on.