[binutils-gdb] Add to documentation of Python 'dont_repeat' method

[Tom Tromey <tromey@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=285dfa0f6877ea7677e84c3c1001c5d339fbbe5e

commit 285dfa0f6877ea7677e84c3c1001c5d339fbbe5e
Author: Tom Tromey <tom@tromey.com>
Date:   Sat Feb 19 09:33:12 2022 -0700

    Add to documentation of Python 'dont_repeat' method
    
    PR python/28533 points out that the Python 'dont_repeat' documentation
    is a bit ambiguous about when the method ought to be called.  This
    patch spells it out.

Diff:
---
 gdb/doc/python.texi | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/gdb/doc/python.texi b/gdb/doc/python.texi
index 75804ef975e..62db5f27016 100644
--- a/gdb/doc/python.texi
+++ b/gdb/doc/python.texi
@@ -4001,8 +4001,10 @@ not documented.'' is used.
 @defun Command.dont_repeat ()
 By default, a @value{GDBN} command is repeated when the user enters a
 blank line at the command prompt.  A command can suppress this
-behavior by invoking the @code{dont_repeat} method.  This is similar
-to the user command @code{dont-repeat}, see @ref{Define, dont-repeat}.
+behavior by invoking the @code{dont_repeat} method at some point in
+its @code{invoke} method (normally this is done early in case of
+exception).  This is similar to the user command @code{dont-repeat},
+see @ref{Define, dont-repeat}.
 @end defun
 
 @defun Command.invoke (argument, from_tty)