Directory Tracking
Shell mode keeps track of cd, pushd and popd
commands given to the inferior shell, so it can keep the
*shell* buffer's default directory the same as the shell's
working directory. It recognizes these commands syntactically, by
examining lines of input that are sent.
If you use aliases for these commands, you can tell Emacs to
recognize them also. For example, if the value of the variable
shell-pushd-regexp matches the beginning of a shell command
line, that line is regarded as a pushd command. Change this
variable when you add aliases for pushd. Likewise,
shell-popd-regexp and shell-cd-regexp are used to
recognize commands with the meaning of popd and cd.
These commands are recognized only at the beginning of a shell command
line.
If Emacs gets confused about changes in the current directory of the
subshell, use the command M-x dirs to ask the shell what its
current directory is. This command works for shells that support the
most common command syntax; it may not work for unusual shells.
You can also use M-x dirtrack-mode to enable (or disable) an
alternative and more aggressive method of tracking changes in the
current directory.
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