vim swap files

[cyboman]

i set my backup and swap directories to

~\vimfiles\data\swap
~\vimfiles\data\backup

however at my work i very often have to edit two different revisions
of the same project, meaning that quite often i have vim open two
files in different directories with the same name. because of the my
setting for backup and swap files this causes them to store in the
same location under the same name. does anybody know of a way of
giving unique names to the swap files and backup files.

example:

\home\myFirstProject\file.c
\home\mySecondProject\file.c

vim will store
~\vimfiles\data\swap\file.c.swp
~\vimfiles\data\backup\~file.c.swp

for both projects.

what i want is

~\vimfiles\data\swap\uniqueNameForMyFirstPeojctfile.c.swp
~\vimfiles\data\swap\uniqueNameForMySecondPeojctfile.c.swp
~\vimfiles\data\backup\~uniqueNameForMyFirstPeojctfile.c.swp
~\vimfiles\data\backup\~uniqueNameForMySecondPeojctfile.c.swp

any help is appreciated

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[John Little-4]

On Aug 12, 9:17 am, cyboman <[hidden email]> wrote:
> i set my backup and swap directories to ...

What you ask can be done with autocommands, but maybe it would be
simpler to use (from :help 'dir'):

        - For Unix and Win32, if a directory ends in two path separators "//"
          or "\\", the swap file name will be built from the complete path to
          the file with all path separators substituted to percent '%' signs.

Regards, John

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[Gary Johnson-4]

On 2011-08-11, cyboman wrote:

> i set my backup and swap directories to
>
> ~\vimfiles\data\swap
> ~\vimfiles\data\backup
>
> however at my work i very often have to edit two different revisions
> of the same project, meaning that quite often i have vim open two
> files in different directories with the same name. because of the my
> setting for backup and swap files this causes them to store in the
> same location under the same name. does anybody know of a way of
> giving unique names to the swap files and backup files.
>
> example:
>
> \home\myFirstProject\file.c
> \home\mySecondProject\file.c
>
> vim will store
> ~\vimfiles\data\swap\file.c.swp
> ~\vimfiles\data\backup\~file.c.swp
>
> for both projects.
>
> what i want is
>
> ~\vimfiles\data\swap\uniqueNameForMyFirstPeojctfile.c.swp
> ~\vimfiles\data\swap\uniqueNameForMySecondPeojctfile.c.swp
> ~\vimfiles\data\backup\~uniqueNameForMyFirstPeojctfile.c.swp
> ~\vimfiles\data\backup\~uniqueNameForMySecondPeojctfile.c.swp
>
> any help is appreciated

For swap files it's easy:  just put two slashes at the end of each
directory name in the 'directory' option, e.g.,

    set directory=~/tmp/vimswap//,$TMP//,$TEMP//

That will generate a unique name for each swap file based on the
full path name of the original file.  See

    :help 'directory'

Unfortunately the same feature does not exist yet for backup
files.  It's still an item in the todo list, but at least it's in
the "known bugs and current work" section, so maybe it's coming
soon.

In the mean time, you may want to turn off the 'backup' option and
create your own backups using a BufRead autocommand or one of the
backup plugins.

Regards,
Gary

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[John Little-4]

On Aug 12, 9:49 am, Gary Johnson <[hidden email]> wrote:

> In the mean time, you may want to turn off the 'backup' option and
> create your own backups using a BufRead autocommand ...

Or use the BufWritePost event to rename the backup that has just been
created.  I sometimes do that to put a time stamp in the backup file
name, so that all such backup files are kept indefinitely.  (I've been
persuaded that that using a version control system, checking in on
every save, is a better way to do the same thing, but haven't got
around to it.)  Maybe (minimally tested):

function! ProjBackup()
    let bup = globpath(&backupdir, expand('%:t') . &bex)
    if bup != ""
        let this = expand('%:p:h')
        if this =~? 'myFirstProject'
            let add = 'uniqueNameForMyFirstPeojct'
        elseif this =~? 'mySecondProject'
            let add = 'uniqueNameForMySecondPeojct'
        else
            " use last directory
            let add = substitute(this,'.*[/\\]','',"")
        endif
        let newname = substitute(bup,'[\\/]\ze[^\\/]\+$','&' . add,
'')
        if rename(bup, newname)
            echoerr "failed rename of backup " . bup . " to " .
newname
        endif
    endif
endfunction

augroup ProjBackup
    au! BufWritePost * call ProjBackup()
augroup END

HTH, and regards, John

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[cyboman]

On Aug 11, 5:49 pm, Gary Johnson <[hidden email]> wrote:

> On 2011-08-11, cyboman wrote:
> > i set my backup and swap directories to
>
> > ~\vimfiles\data\swap
> > ~\vimfiles\data\backup
>
> > however at my work i very often have to edit two different revisions
> > of the same project, meaning that quite often i have vim open two
> > files in different directories with the same name. because of the my
> > setting for backup and swap files this causes them to store in the
> > same location under the same name. does anybody know of a way of
> > giving unique names to the swap files and backup files.
>
> > example:
>
> > \home\myFirstProject\file.c
> > \home\mySecondProject\file.c
>
> > vim will store
> > ~\vimfiles\data\swap\file.c.swp
> > ~\vimfiles\data\backup\~file.c.swp
>
> > for both projects.
>
> > what i want is
>
> > ~\vimfiles\data\swap\uniqueNameForMyFirstPeojctfile.c.swp
> > ~\vimfiles\data\swap\uniqueNameForMySecondPeojctfile.c.swp
> > ~\vimfiles\data\backup\~uniqueNameForMyFirstPeojctfile.c.swp
> > ~\vimfiles\data\backup\~uniqueNameForMySecondPeojctfile.c.swp
>
> > any help is appreciated
>
> For swap files it's easy:  just put two slashes at the end of each
> directory name in the 'directory' option, e.g.,
>
>     set directory=~/tmp/vimswap//,$TMP//,$TEMP//
>
> That will generate a unique name for each swap file based on the
> full path name of the original file.  See
>
>     :help 'directory'
>
> Unfortunately the same feature does not exist yet for backup
> files.  It's still an item in the todo list, but at least it's in
> the "known bugs and current work" section, so maybe it's coming
> soon.
>
> In the mean time, you may want to turn off the 'backup' option and
> create your own backups using a BufRead autocommand or one of the
> backup plugins.
>
> Regards,
> Gary

thanks for the help everyone. i'll wait till the full feature for the
backup will be implemented but will use the swap file with a full name
feature.

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[Christian Brabandt]

On Thu, August 11, 2011 11:49 pm, Gary Johnson wrote:
> Unfortunately the same feature does not exist yet for backup
> files.  It's still an item in the todo list, but at least it's in
> the "known bugs and current work" section, so maybe it's coming
> soon.

I made the patch last year. I think, when Bram comes around that
far in the todo list, it might be integrated. Depending how far down
it is in the todo list, this may take forever.

regards,
Christian

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