Re: Bug: Losing .zsh_history

[Dominik Vogt <dominik.vogt@xxxxxx>]

On Wed, Oct 05, 2022 at 03:16:27PM -0700, Bart Schaefer wrote:
> On Wed, Oct 5, 2022 at 12:55 PM Dominik Vogt <dominik.vogt@xxxxxx> wrote:
> >
> > I wonder if this situation could be prevented by changing the code
> > that writes the history file at exit.  Is truncating the file to
> > zero size part of the procedure?  When I need to write a file in a
> > safe manner, the procedure normally looks like this:
> >
> >  * Create file.new
> >  * Rename file to file.old
> >  * Rename file.new to file
> >  (* Possibly sync filesystem)
> >  * Erase file.old
>
> zsh is not going to sync the filesystem for you.

Of course.

> Other than that,
> though, the default behavior should be close to what you just
> described, see the HIST_SAVE_BY_COPY option (which you should make
> sure has not been unset).

> You might also look at the setting of the HIST_FCNTL_LOCK option.

Both at default:

  $ set -o
  nohistsavebycopy      off
  histfcntllock         off

So, the question is how this can happen at all.

Ciao

Dominik ^_^  ^_^

--

Dominik Vogt