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-rw-r--r--runtime/doc/builtin.txt2
1 files changed, 2 insertions, 0 deletions
diff --git a/runtime/doc/builtin.txt b/runtime/doc/builtin.txt
index 48fa953954..c09c0d552e 100644
--- a/runtime/doc/builtin.txt
+++ b/runtime/doc/builtin.txt
@@ -8509,6 +8509,8 @@ virtcol2col({winid}, {lnum}, {col}) *virtcol2col()*
character in window {winid} at buffer line {lnum} and virtual
column {col}.
+ If buffer line {lnum} is an empty line, 0 is returned.
+
If {col} is greater than the last virtual column in line
{lnum}, then the byte index of the character at the last
virtual column is returned.