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port window-minibuffer-p #319

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merged 5 commits into from Sep 25, 2017
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@@ -197,6 +197,9 @@ pub use interactive::Fprefix_numeric_value;
pub use editfns::Fbolp;
pub use editfns::Feolp;
// Used in minibuffer.c
pub use windows::Fwindow_minibuffer_p;
extern "C" {
fn defsubr(sname: *const Lisp_Subr);
}
@@ -218,6 +221,7 @@ pub extern "C" fn rust_init_syms() {
defsubr(&*buffers::Soverlay_end);
defsubr(&*buffers::Soverlay_buffer);
defsubr(&*windows::Swindowp);
defsubr(&*windows::Swindow_minibuffer_p);
defsubr(&*windows::Swindow_live_p);
defsubr(&*windows::Swindow_point);
defsubr(&*windows::Sselected_window);
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@@ -8,6 +8,8 @@ use editfns::point;
pub type LispWindowRef = ExternalPtr<Lisp_Window>;
const FLAG_MINI: u16 = 1 << 0;
impl LispWindowRef {
/// Check if window is a live window (displays a buffer).
/// This is also sometimes called a "leaf window" in Emacs sources.
@@ -30,6 +32,11 @@ impl LispWindowRef {
pub fn start_marker(self) -> LispObject {
LispObject::from_raw(self.start)
}
#[inline]
pub fn is_minibuffer(&self) -> bool {
self.flags & FLAG_MINI != 0
}
}
/// Return t if OBJECT is a window and nil otherwise.
@@ -116,3 +123,15 @@ pub fn window_start(window: LispObject) -> LispObject {
};
marker_position(win.as_live_window_or_error().start_marker())
}
/// Return non-nil if WINDOW is a minibuffer window.
/// WINDOW must be a valid window and defaults to the selected one.
#[lisp_fn(min = "0")]
pub fn window_minibuffer_p(window: LispObject) -> LispObject {
let win = if window.is_nil() {
selected_window()
} else {
window
};
LispObject::from_bool(win.as_window_or_error().is_minibuffer())
}
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@@ -340,15 +340,6 @@ If FRAME is omitted or nil, it defaults to the selected frame. */)
return FRAME_MINIBUF_WINDOW (decode_live_frame (frame));
}
DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p,
Swindow_minibuffer_p, 0, 1, 0,
doc: /* Return non-nil if WINDOW is a minibuffer window.
WINDOW must be a valid window and defaults to the selected one. */)
(Lisp_Object window)
{
return MINI_WINDOW_P (decode_valid_window (window)) ? Qt : Qnil;
}
/* Don't move this to window.el - this must be a safe routine. */
DEFUN ("frame-first-window", Fframe_first_window, Sframe_first_window, 0, 1, 0,
doc: /* Return the topmost, leftmost live window on FRAME-OR-WINDOW.
@@ -7666,7 +7657,6 @@ displayed after a scrolling operation to be somewhat inaccurate. */);
Vfast_but_imprecise_scrolling = false;
defsubr (&Sminibuffer_window);
defsubr (&Swindow_minibuffer_p);
defsubr (&Swindow_frame);
defsubr (&Sframe_root_window);
defsubr (&Sframe_first_window);
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