* integration/bash (__eat_current_command, __eat_exit_status)
(__eat_inhibit_preexec): Move to '__eat_enable_integration'.
* integration/bash (__eat_prompt_start, __eat_prompt_end)
(__eat_continuation_start, __eat_continuation_end): Move to
'__eat_enable_integration' and make local there.
* eat.el (eat--t-term): New slots: 'prompt-start-fn',
'prompt-end-fn', 'cont-prompt-start-fn', 'cont-prompt-end-fn',
'set-cmd-fn', 'cmd-start-fn', 'cmd-finish-fn'
* eat.el (eat--t-set-cwd): Accept three arguments in two
different formats.
* eat.el (eat--t-prompt-start, eat--t-prompt-end)
(eat--t-cont-prompt-start, eat--t-cont-prompt-end)
(eat--t-set-cmd, eat--t-cmd-start, eat--t-cmd-finish): New
function.
* eat.el (eat--t-handle-output): Accept Eat's own
OSC 51 ; e ; ... ST sequences.
* eat.el (eat-term-prompt-start-function)
(eat-term-prompt-end-function)
(eat-term-continuation-prompt-start-function)
(eat-term-continuation-prompt-end-function)
(eat-term-set-cmd-function, eat-term-cmd-start-function)
(eat-term-cmd-finish-function): New generalized variable.
* integration/bash (__eat_current_command, __eat_exit_status):
New variable.
* integration/bash (__eat_prompt_command): Send exit status of
last command, if applicable. Use Eat specific sequence to
report working directory. Set title.
* integration/bash (__eat_preexec): Report current command and
execution start.
* integration/bash (__eat_before_prompt_command): Set
'__eat_exit_status' to the exit status of the last command.
* integration/bash (__eat_prompt_start, __eat_prompt_end)
(__eat_continuation_start, __eat_continuation_end): New
variable, used as constant only to make the code more readable.
* integration/bash (__eat_enable_integration): Wrap 'PS1' and
'PS2'. Don't set title from 'PS1'.
* integration/bash (__eat_in_prompt_command): Rename to
'__eat_inhibit_preexec'.
* integration/bash (__eat_before_exec): Inhibit further
'__eat_preexec' calls until next prompt.
* integration/bash (__eat_preexec): Use 'history' to get the
real command typed by the user.
* integration/bash (__eat_prompt_command): Remove extra '\'s.
* integration/bash (__eat_in_prompt_command): New variable.
* integration/bash (__eat_preexec, __eat_before_prompt_command)
(__eat_after_prompt_command, __eat_before_exec): New function.
* integration/bash: Modify PS1 to update terminal title when
displaying prompt. Add '__eat_before_exec' as 'DEBUG' trap
handler to update terminal title just before executing a
command. Prepend and append '__eat_before_prompt_command' and
'__eat_after_prompt_command' to 'PROMPT_COMMAND' to avoid
getting trapped in 'DEBUG' trap.
* integration/bash: New file.
* eat.el (eat-term-shell-integration-directory): New variable.
Contains path to the directory containing the scripts,
automatically updated when Eat is updated.
* eat.el (eat-exec, eat-eshell-mode): New enviroment variable
'EAT_SHELL_INTEGRATION_DIR'.
* eat.texi (Shell Integration): New chapter.
* eat.texi (Directory Tracking): Refer to 'Shell Integration'.
