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patch 8.0.0542: getpos() can return a negative line number

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Problem:    getpos() can return a negative line number. (haya14busa)
Solution:   Handle a zero topline and botline. (closes #1613)
This commit is contained in:
Bram Moolenaar
2017-04-03 22:02:55 +02:00
parent 04000560ca
commit a1d5fa65bc
3 changed files with 11 additions and 4 deletions
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7
src/eval.c
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@@ -6120,13 +6120,16 @@ var2fpos(
if (name[1] == '0') /* "w0": first visible line */
{
update_topline();
pos.lnum = curwin->w_topline;
/* In silent Ex mode topline is zero, but that's not a valid line
* number; use one instead. */
pos.lnum = curwin->w_topline > 0 ? curwin->w_topline : 1;
return &pos;
}
else if (name[1] == '$') /* "w$": last visible line */
{
validate_botline();
pos.lnum = curwin->w_botline - 1;
/* In silent Ex mode botline is zero, return zero then. */
pos.lnum = curwin->w_botline > 0 ? curwin->w_botline - 1 : 0;
return &pos;
}
}