Yegappan wrote:
> > > When developing tests for the memline.c file, I ran into a E315
> > > ml_get error when trying to recover from a swap file on a Linux
> > > system using the following function:
> > >
> > > func Test()
> > > call delete('Xfile1')
> > > call delete('Xfile2')
> > > call delete('.Xfile1.swp')
> > > call writefile([], 'Xfile1')
> > > silent !ln -s Xfile1 Xfile2
> > > edit Xfile2
> > > preserve
> > > let b = readblob('.Xfile1.swp')
> > > %bw!
> > > call writefile(['aaa', 'bbb', 'ccc'], 'Xfile1')
> > > call writefile(b, '.Xfile1.swp')
> > > recover Xfile1
> > > endfunc
> > > call Test()
> > >
> > > After calling this function, press Enter for the prompts, you will
> > > see a series of E315 errors.
> >
> > I ran this in the src/testdir directory with "vim --clean". I got:
> >
> > "Xfile2" 0L, 0B
> > File preserved
> > 2 buffers wiped out
> > Using swap file ".Xfile1.swp"
> > Original file "~/vim/vim82/src/testdir/Xfile1"
> > Recovery completed. You should check if everything is OK.
> > (You might want to write out this file under another name
> > and run diff with the original file to check for changes)
> > You may want to delete the .swp file now.
> > Note: process STILL RUNNING: 868546
> >
> >
> > No ml_get errors. Something else needed?
> >
>
> Looks like the viminfo file needs some entries pointing to Xfile1
> to reproduce this issue. The following commands reproduce the issue:
>
> <place the above Test() function in a file called test.vim>
>
> vim --clean -c 'set viminfofile=' -c 'call writefile(["aaa", "bbb",
> "ccc"], "Xfile1")' -c 'edit Xfile1' -c 'normal 3Gyy' -c 'call
> delete("Xfile1")' -c 'q'
> vim --clean -c 'set viminfofile=' -c 'source test.vim' -c 'call Test()'
OK, I can reproduce it now. It's because the cursor is positioned
further down in the file and then recovering deletes lines.
It's easy to fix, but reproducing the problem is complicated. It should
be possible to simplify though, knowing how it happens (when reading the
file an autocommand moves the cursor to the last used position).
--
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most of my songs on it, mainly because I can never find any paper."
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