dirsInDir returns a list of directories in a directory.

Esc escapes a string for use in a wikifier template.

EscFmt escapes a string for use in wikifier formatted text.

EscLink is like EscFmt except also escapes pipe for [[ links ]].

EscListMapValue is like EscFmt except also escapes semicolon.

EscMapKey is like EscFmt except also escapes colon and semicolon.