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;
regards,
Christian
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