speedbar-ignored-directory-regexp

speedbar-ignored-directory-regexp is a variable defined in `speedbar.el'.
Its value is

"\\(\\([/\\]logs?[/\\]\\'\\)\\)$"

Documentation:
Regular expression matching directories speedbar will not switch to.
Created from `speedbar-ignored-directory-expressions' with the function
`speedbar-extension-list-to-regex' (a misnamed function in this case.)
Use the function `speedbar-add-ignored-directory-regexp', or customize the
variable `speedbar-ignored-directory-expressions' to modify this variable.