emacs-27 8e8b46e: More accurate documentation of the "r" interactive spec

[Eli Zaretskii]

branch: emacs-27
commit 8e8b46ef818a5f94a9697dce1c49c6869d61deed
Author: Eli Zaretskii <eliz@gnu.org>
Commit: Eli Zaretskii <eliz@gnu.org>

    More accurate documentation of the "r" interactive spec
    
    * doc/lispref/commands.texi (Interactive Codes): Describe the
    effect of 'mark-even-if-inactive'.
---
 doc/lispref/commands.texi | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/doc/lispref/commands.texi b/doc/lispref/commands.texi
index 5385c03..7569ca6 100644
--- a/doc/lispref/commands.texi
+++ b/doc/lispref/commands.texi
@@ -488,7 +488,10 @@ I/O.
 Point and the mark, as two numeric arguments, smallest first.  This is
 the only code letter that specifies two successive arguments rather than
 one.  This will signal an error if the mark is not set in the buffer
-which is current when the command is invoked.  No I/O.
+which is current when the command is invoked.  If Transient Mark mode
+is turned on (@pxref{The Mark}) --- as it is by default --- and user
+option @code{mark-even-if-inactive} is @code{nil}, Emacs will signal
+an error even if the mark @emph{is} set, but is inactive.  No I/O.
 
 @item s
 Arbitrary text, read in the minibuffer and returned as a string