vim-patch:d353d27: runtime(doc): restore description of "$" in col() and virtcol() (vim/vim#14981)

These are different from line() and getpos().

https://github.com/vim/vim/commit/d353d2782032b91498601afefee4256592f48074

1 files changed, 7 insertions, 3 deletions

diff --git a/runtime/doc/builtin.txt b/runtime/doc/builtin.txt
index 7ccfe2f1b3..1472296bd9 100644
--- a/runtime/doc/builtin.txt
+++ b/runtime/doc/builtin.txt
@@ -703,6 +703,8 @@ col({expr} [, {winid}])                                                  *col()*
 		The result is a Number, which is the byte index of the column
 		position given with {expr}.
 		For accepted positions see |getpos()|.
+		When {expr} is "$", it means the end of the cursor line, so
+		the result is the number of bytes in the cursor line plus one.
 		Additionally {expr} can be [lnum, col]: a |List| with the line
 		and column number. Most useful when the column is "$", to get
 		the last column of a specific line.  When "lnum" or "col" is
@@ -2742,7 +2744,7 @@ getpos({expr})                                                        *getpos()*
 		    .	    The cursor position.
 		    $	    The last line in the current buffer.
 		    'x	    Position of mark x (if the mark is not set, 0 is
-			    returned).
+			    returned for all values).
 		    w0	    First line visible in current window (one if the
 			    display isn't updated, e.g. in silent Ex mode).
 		    w$	    Last line visible in current window (this is one
@@ -2792,8 +2794,8 @@ getpos({expr})                                                        *getpos()*
 			let save_a_mark = getpos("'a")
 			" ...
 			call setpos("'a", save_a_mark)
-
-<		Also see |getcharpos()|, |getcurpos()| and |setpos()|.
+<
+		Also see |getcharpos()|, |getcurpos()| and |setpos()|.
 
 getqflist([{what}])                                                *getqflist()*
 		Returns a |List| with all the current quickfix errors.  Each
@@ -8752,6 +8754,8 @@ virtcol({expr} [, {list} [, {winid}]])                               *virtcol()*
 		For the byte position use |col()|.
 
 		For the use of {expr} see |getpos()| and |col()|.
+		When {expr} is "$", it means the end of the cursor line, so
+		the result is the number of cells in the cursor line plus one.
 
 		When 'virtualedit' is used {expr} can be [lnum, col, off],
 		where "off" is the offset in screen columns from the start of