On Mo, 04 Sep 2017, Manuel Ortega wrote:
> 8.0.1039 broke setline(). I know this by bisection. To reproduce:
>
> Make a file, testvimrc, that contains one line: "source foo".
>
> Create the file "foo", and let it contain only the following:
>
> call setline(1, "Hello There")
>
> To show the bug, do: vim -u testvimrc -u NONE -N
>
> Expected behavior, which was also the actual behavior before 8.0.1039: I see
> a
> new buffer with "Hello There" on the first line.
>
> Actual behavior: after 8.0.1039: I see no text whatsoever in the buffer.
>
> This is on macOS 10.12.6.
I see the problem. There is a new check for buf->b_ml.ml_mfp == NULL in
set_buffer_lines that wasn't there previously and this was no problem
before, because ml_replace would open the buffer if ml_mfp would be
null. I think we can safely change this check to:
diff --git a/src/evalfunc.c b/src/evalfunc.c
index 2692de61f..e68e0b00e 100644
--- a/src/evalfunc.c
+++ b/src/evalfunc.c
@@ -9885,7 +9885,7 @@ set_buffer_lines(buf_T *buf, linenr_T lnum, typval_T
*lines, typval_T *rettv)
buf_T *curbuf_save;
int is_curbuf = buf == curbuf;
- if (buf == NULL || buf->b_ml.ml_mfp == NULL || lnum < 1)
+ if (buf == NULL || (buf->b_ml.ml_mfp == NULL && !is_curbuf)|| lnum < 1)
{
rettv->vval.v_number = 1; /* FAIL */
return;
or perhaps even completely remove the check. Not sure if this however
will break in some situations, but at least I could not break it using
:call setbufline(5, 1, 'foobar')
in the startupfile (when buffer number 5 does not exist yet.
Best,
Christian
--
Frauen sind wie Milch, wenn Man(n) sie stehen läßt, werden sie sauer.
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