Auto Save Control Auto Save
You can use the contents of an auto-save file to recover from a loss
of data with the command M-x recover-file
RET. This visits file and then (after your confirmation)
restores the contents from its auto-save file `
You can then save with C-x C-s to put the recovered text into
file itself. For example, to recover file `
foo.c' from its
auto-save file `
Before asking for confirmation, M-x recover-file displays a directory listing describing the specified file and the auto-save file, so you can compare their sizes and dates. If the auto-save file is older, M-x recover-file does not offer to read it.
If Emacs or the computer crashes, you can recover all the files you were editing from their auto save files with the command M-x recover-session. This first shows you a list of recorded interrupted sessions. Move point to the one you choose, and type C-c C-c.
recover-session asks about each of the files that were
being edited during that session, asking whether to recover that file.
If you answer y, it calls
recover-file, which works in its
normal fashion. It shows the dates of the original file and its
auto-save file, and asks once again whether to recover that file.
recover-session is done, the files you've chosen to
recover are present in Emacs buffers. You should then save them. Only
this---saving them---updates the files themselves.
Interrupted sessions are recorded for later recovery in files named
~/.saves-pid-hostname'. The `
~/.saves' portion of
these names comes from the value of
You can arrange to record sessions in a different place by setting that
variable in your `
.emacs' file, but you'll have to redefine
recover-session as well to make it look in the new place. If you
nil in your
.emacs' file, sessions are not recorded for recovery.