master 9be54e3: Doc string clarification for keep-lines

[Lars Ingebrigtsen]

branch: master
commit 9be54e3dba824a6d435d145deb786c71b3773593
Author: Lars Ingebrigtsen <larsi@gnus.org>
Commit: Lars Ingebrigtsen <larsi@gnus.org>

    Doc string clarification for keep-lines
    
    * lisp/replace.el (keep-lines): Note that REND isn't optional if
    RSTART is given (bug#44021).
---
 lisp/replace.el | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lisp/replace.el b/lisp/replace.el
index d34cabf..3a2ab1d 100644
--- a/lisp/replace.el
+++ b/lisp/replace.el
@@ -906,7 +906,8 @@ and `search-upper-case' is non-nil, the matching is 
case-sensitive.
 Second and third arg RSTART and REND specify the region to operate on.
 This command operates on (the accessible part of) all lines whose
 accessible part is entirely contained in the region determined by RSTART
-and REND.  (A newline ending a line counts as part of that line.)
+and REND.  (A newline ending a line counts as part of that line.)  If RSTART
+is non-nil, REND also has to be given.
 
 Interactively, in Transient Mark mode when the mark is active, operate
 on all lines whose accessible part is entirely contained in the region.