(Text Lines): Add line-number-at-pos.

diff --git a/lispref/positions.texi b/lispref/positions.texi
index 72b84a6a0cee0ccad17d27976b08b2034f4af8f7..a0e151a1616f09db4dd7bfef0ea31218f8b38c9e 100644 (file)
--- a/lispref/positions.texi
+++ b/lispref/positions.texi
@@ -409,6 +409,12 @@ Here is an example of using @code{count-lines}:
 @end example
 @end defun
 
+@defun line-number-at-pos &optional pos
+@cindex line number
+This function returns the line number in the current buffer
+corresponding the buffer position @var{pos}.  If @var{pos} is nil or
+omitted, the current buffer position is used.
+
 @ignore
 @c ================
 The @code{previous-line} and @code{next-line} commands are functions