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Code Issues Releases Activity

Keep interactive uses of 'recenter' backward compatible (Bug#31325)

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* window.c (Frecenter): Change the interactive spec to always pass
a non-nil value to the REDISPLAY argument when called interactively.
* window.el (recenter-top-bottom): Make sure 'recenter's second
argument is non-nil everywhere.
* windows.texi (Textual Scrolling): Update documentation of
'recenter'.
This commit is contained in:
John Shahid 2018-07-01 14:48:24 -04:00 committed by Eli Zaretskii
parent 42c0b8f3f2
commit ea2f96837d
3 changed files with 5 additions and 4 deletions
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3
doc/lispref/windows.texi
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@ -4156,7 +4156,8 @@ window. If @var{count} is @code{nil} and @var{redisplay} is
non-@code{nil}, this function may redraw the frame, according to the
value of @code{recenter-redisplay}. Thus, omitting the second
argument can be used to countermand the effect of
@code{recenter-redisplay} being non-@code{nil}.
@code{recenter-redisplay} being non-@code{nil}. Interactive calls
pass non-‘nil’ for @var{redisplay}.
When @code{recenter} is called interactively, @var{count} is the raw
prefix argument. Thus, typing @kbd{C-u} as the prefix sets the

2
lisp/window.el
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@ -8767,7 +8767,7 @@ A prefix argument is handled like `recenter':
With plain `C-u', move current line to window center."
(interactive "P")
(cond
(arg (recenter arg)) ; Always respect ARG.
(arg (recenter arg t)) ; Always respect ARG.
(t
(setq recenter-last-op
(if (eq this-command last-command)

4
src/window.c
View File

@ -5901,7 +5901,7 @@ displayed_window_lines (struct window *w)
}
DEFUN ("recenter", Frecenter, Srecenter, 0, 2, "P",
DEFUN ("recenter", Frecenter, Srecenter, 0, 2, "P\np",
doc: /* Center point in selected window and maybe redisplay frame.
With a numeric prefix argument ARG, recenter putting point on screen line ARG
relative to the selected window. If ARG is negative, it counts up from the
@ -5913,7 +5913,7 @@ non-nil, also erase the entire frame and redraw it (when
`auto-resize-tool-bars' is set to `grow-only', this resets the
tool-bar's height to the minimum height needed); if
`recenter-redisplay' has the special value `tty', then only tty frames
are redrawn.
are redrawn. Interactively, REDISPLAY is always non-nil.
Just C-u as prefix means put point in the center of the window
and redisplay normally--don't erase and redraw the frame. */)