If the variable comint-scroll-to-bottom-on-input is
nil, insertion and yank commands scroll the selected window
to the bottom before inserting. The default is
If comint-scroll-show-maximum-output is non-
arrival of output when point is at the end tries to scroll the last
line of text to the bottom line of the window, showing as much useful
text as possible. (This mimics the scrolling behavior of most
terminals.) The default is t.
By setting comint-move-point-for-output, you can opt for
having point jump to the end of the buffer whenever output arrives—no
matter where in the buffer point was before. If the value is
this, point jumps in the selected window. If the value is
all, point jumps in each window that shows the Comint buffer. If
the value is
other, point jumps in all nonselected windows that
show the current buffer. The default value is
nil, which means
point does not jump to the end.
If you set comint-prompt-read-only, the prompts in the Comint buffer are read-only.
The variable comint-input-ignoredups controls whether successive
identical inputs are stored in the input history. A non-
value means to omit an input that is the same as the previous input.
The default is
nil, which means to store each input even if it is
equal to the previous input.
Three variables customize file name completion. The variable
comint-completion-addsuffix controls whether completion inserts a
space or a slash to indicate a fully completed file or directory name
nil means do insert a space or slash).
comint-completion-recexact, if non-
nil, directs TAB
to choose the shortest possible completion if the usual Emacs completion
algorithm cannot add even a single character.
comint-completion-autolist, if non-
nil, says to list all
the possible completions whenever completion is not exact.
Command completion normally considers only executable files.
If you set shell-completion-execonly to
it considers nonexecutable files as well.
The variable shell-completion-fignore specifies a list of file
name extensions to ignore in Shell mode completion. The default
nil, but some users prefer
('~' '#' '%') to
ignore file names ending in ‘~’, ‘#’ or ‘%’. Other
related Comint modes use the variable comint-completion-fignore
Some implementation details of the shell command completion may also be found
in the lisp documentation of the
You can configure the behavior of ‘pushd’. Variables control whether ‘pushd’ behaves like ‘cd’ if no argument is given (shell-pushd-tohome), pop rather than rotate with a numeric argument (shell-pushd-dextract), and only add directories to the directory stack if they are not already on it (shell-pushd-dunique). The values you choose should match the underlying shell, of course.