when you put partial file name in the search box, hfs parses and completes it by adding * at the beginning and end to not have a strict match
do not use quotes in search field with following examplessearch for names with "music", hfs converts it to "*music*" and give a list with all file contening "music"
to search for files beginning with music, simply enter "music*"
to search for files ending with music, simply enter "*music"
we can therefore want files with a specific extension like "*.wav" or various extensions by separating them with a semicolon as "*.wav;*.mpeg4"
to exclude files, just create a filter starting with "\"
"\*.wav;*.mpeg4" will display all files except those with the extension .wav or .mpeg4
look at the wiki link
http://rejetto.com/wiki/index.php?title=HFS:_File_masks