cdable_vars
If set, an argument to the cd builtin command that is
not a directory is assumed to be the name of a variable
whose value is the directory to change to.

cdspell
If set, minor errors in the spelling of a directory component in a cd command will be corrected. The errors
checked for are transposed characters, a missing character, and one character too many. If a correction is
found, the corrected file name is printed, and the command proceeds. This option is only used by interactive
shells.

cmdhist
If set, bash attempts to save all lines of a multiple-
line command in the same history entry. This allows
easy re-editing of multi-line commands.

dirspell
If set, bash attempts spelling correction on directory
names during word completion if the directory name
initially supplied does not exist.
dotglob If set, bash includes filenames beginning with a ‘.’ in
the results of pathname expansion.

histreedit
If set, and readline is being used, a user is given the
opportunity to re-edit a failed history substitution.

histverify
If set, and readline is being used, the results of his-
tory substitution are not immediately passed to the
shell parser. Instead, the resulting line is loaded
into the readline editing buffer, allowing further modi-
fication.

fc is used to list or edit and re-execute commands from the history list.
FIRST and LAST can be numbers specifying the range, or FIRST can be a
string, which means the most recent command beginning with that
string.

Options:
-e ENAME select which editor to use. Default is FCEDIT, then EDITOR,
then vi
-l list lines instead of editing
-n omit line numbers when listing
-r reverse the order of the lines (newest listed first)

With the `fc -s [pat=rep ...] [command]' format, COMMAND is
re-executed after the substitution OLD=NEW is performed.

A useful alias to use with this is r='fc -s', so that typing `r cc'
runs the last command beginning with `cc' and typing `r' re-executes
the last command.