home/rc/tools/autorestore.kak
Johannes Altmanninger 52a7c58670 rc autorestore: fix regression due to ! breaking change
Commit 85b78dda (src: Select the data inserted by `!` and `<a-!>`,
merged on 2021-03-06) broke autorestore by making it delete the
restored content.  I've been using it for 6 months but never noticed
since I didn't use autorestore

Reproducer:

	HOME=$PWD kak -s foo README.asciidoc -e 'exec iUNSAVED-CONTENT'
	# In another terminal:
	ps aux | awk '/kak -s foo/ {print $2; exit}' | xargs kill -HUP
	HOME=$PWD kak -s foo README.asciidoc

Delete the trailing newline instead of the restored content.

While at it, remove some <space> commands from execute-keys, to make
it work on the breaking-cleanups branch which swaps <space> and ",".

Closes #4335
2022-04-28 19:32:24 +02:00

94 lines
3.0 KiB
Plaintext

declare-option -docstring %{
Remove backups once they've been restored
See `:doc autorestore` for details.
} \
bool autorestore_purge_restored true
## Insert the content of the backup file into the current buffer, if a suitable one is found
define-command autorestore-restore-buffer \
-docstring %{
Restore the backup for the current file if it exists
See `:doc autorestore` for details.
} \
%{
evaluate-commands %sh{
buffer_basename="${kak_buffile##*/}"
buffer_dirname=$(dirname "${kak_buffile}")
if [ -f "${kak_buffile}" ]; then
newer=$(find "${buffer_dirname}"/".${buffer_basename}.kak."* -newer "${kak_buffile}" -exec ls -1t {} + 2>/dev/null | head -n 1)
older=$(find "${buffer_dirname}"/".${buffer_basename}.kak."* \! -newer "${kak_buffile}" -exec ls -1t {} + 2>/dev/null | head -n 1)
else
# New buffers that were never written to disk.
newer=$(ls -1t "${buffer_dirname}"/".${buffer_basename}.kak."* 2>/dev/null | head -n 1)
older=""
fi
if [ -z "${newer}" ]; then
if [ -n "${older}" ]; then
printf %s\\n "
echo -debug Old backup file(s) found: will not restore ${older} .
"
fi
exit
fi
printf %s\\n "
## Replace the content of the buffer with the content of the backup file
echo -debug Restoring file: ${newer}
execute-keys -draft %{%d!cat<space>\"${newer}\"<ret>jd}
## If the backup file has to be removed, issue the command once
## the current buffer has been saved
## If the autorestore_purge_restored option has been unset right after the
## buffer was restored, do not remove the backup
hook -group autorestore buffer BufWritePost '${kak_buffile}' %{
nop %sh{
if [ \"\${kak_opt_autorestore_purge_restored}\" = true ];
then
rm -f \"${buffer_dirname}/.${buffer_basename}.kak.\"*
fi
}
}
"
}
}
## Remove all the backups that have been created for the current buffer
define-command autorestore-purge-backups \
-docstring %{
Remove all the backups of the current buffer
See `:doc autorestore` for details.
} \
%{
evaluate-commands %sh{
[ ! -f "${kak_buffile}" ] && exit
buffer_basename="${kak_bufname##*/}"
buffer_dirname=$(dirname "${kak_bufname}")
rm -f "${buffer_dirname}/.${buffer_basename}.kak."*
printf %s\\n "
echo -markup {Information}Backup files removed.
"
}
}
## If for some reason, backup files need to be ignored
define-command autorestore-disable \
-docstring %{
Disable automatic backup recovering
See `:doc autorestore` for details.
} \
%{
remove-hooks global autorestore
}
hook -group autorestore global BufCreate .* %{ autorestore-restore-buffer }