Say you are looking for a new version of Emacs. Such a match is much faster than a search, and you will get a shorter and more comprehensive reply. If you get any hits, you can click on the filenames found to do exact searches on them and locate the actual files. The four query modes Case insensitive substring search . Searches for parts of a filename.
Treats uppercase and lowercase letters equally.
Case sensitive substring search . Searches for parts of a filename. Treats uppercase and lowercase letters like different ones. Regular expression search . Searches for parts of a filename with a regular expression .