Filter and pattern matching options

These options control the panel filter and also the pattern matching routine which is used not only by the panel filter but also by the select and deselect functions.

substring matching: ignore the case of the characters: Check this option to ignore the case of alphabetic characters. Note: this does not apply to pattern matching.
pattern matching: wildcards match the dot in .hidden files: Check this option if you do not want to treat the hidden files specially.
file panel filtering: always show directories: If you check this option, the file panel will show all directories regardless of the filter. This allows traversal of the directory tree while a filter is active.

Notes:

The term hidden files is used for files with names beginning with a period (dot) because they are usually not listed in a directory listing (output of the ls command). This naming convention is the only difference between normal and hidden files.
The option settings are retained between sessions.