Christian Brabandt wrote:
> Recently, I wondered how to clear the quickfix list (and location list).
> My first try was to use setqflist() with an empty list. While this did
> result in an empty quickfix list, it did not make :cw work as it was
> supposed to be. I am not sure whether I am supposed to clear the
> quickfix list like that, but I didn't expect, that this is not possible
> using setqflist().
> Then I found out that using :cgetexpr [] really clears the quickfix list
> and makes :cw work as expected.
>
> So here is a patch, that makes setqflist([]) behave as I would have
> expected it. Admittedly this is a minor inconsistency, but when skimming
> through the help, I did not easily find a way to clear the list, so I
> thought this might be useful.
>
> chrisbra t41:~/vim/src [1019]% hg diff quickfix.c ../runtime/doc/eval.txt
> diff -r 24100651daa9 runtime/doc/eval.txt
> --- a/runtime/doc/eval.txt Tue Mar 23 18:22:46 2010 +0100
> +++ b/runtime/doc/eval.txt Mon Apr 26 22:39:24 2010 +0200
> @@ -4944,6 +4944,8 @@
> item will not be handled as an error line.
> If both "pattern" and "lnum" are present then "pattern" will
> be used.
> + If you supply an empty {list}, the quickfix list will be
> + cleared.
> Note that the list is not exactly the same as what
> |getqflist()| returns.
>
> diff -r 24100651daa9 src/quickfix.c
> --- a/src/quickfix.c Tue Mar 23 18:22:46 2010 +0100
> +++ b/src/quickfix.c Mon Apr 26 22:39:24 2010 +0200
> @@ -3654,7 +3654,10 @@
> }
> }
>
> - qi->qf_lists[qi->qf_curlist].qf_nonevalid = FALSE;
> + if (qi->qf_lists[qi->qf_curlist].qf_index == 0)
> + qi->qf_lists[qi->qf_curlist].qf_nonevalid = TRUE;
> + else
> + qi->qf_lists[qi->qf_curlist].qf_nonevalid = FALSE;
> qi->qf_lists[qi->qf_curlist].qf_ptr =
> qi->qf_lists[qi->qf_curlist].qf_start;
> qi->qf_lists[qi->qf_curlist].qf_index = 1;
Makes sense. I'll have a closer look later.
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