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authorAlan Mackenzie <acm@muc.de>2021-03-21 16:54:31 +0000
committerAlan Mackenzie <acm@muc.de>2021-03-21 16:54:31 +0000
commit7c2ebf6e23663fdc7b1880a4d7caeadc8c47c00e (patch)
tree19216102a0b7fc0212b8cdfa6fc8d70ed6ad86b4 /src/window.c
parente276810dff9838e1bb8c2ec450f85835ed60bf14 (diff)
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Prevent open minibuffers getting lost when their frame gets deleted
This happened with minibuffer-follows-selected-frame set to t. * doc/emacs/mini.texi (Basic Minibuffer): State where a command's action takes place when a minibuffer's frame has been deleted. * lisp/window.el (window--before-delete-windows, record-window-buffer): Take into account that minibuffers are now recorded on w->prev_buffers field. * src/fns.c (merge_c): New version of `merge' taking a C function, rather than a Lisp function as the comparison function. * src/frame.c (do_switch_frame): Pass arguments sf and for_deletion to move_minibuffers_onnto_frame. * src/lisp.h (top level): Declare merge_c and move_minibuffers_onto_selected_frame. * src/minibuf.c (MB_frame): New Lisp_Object recording the minibuffer's frame. (choose_minibuf_frame): Remove all code except that which sets minibuf_window to the current frame's minibuffer. (minibuffer_ent_greater): New comparison function, passed to merge_c. (zip_minibuffer_stacks): New function. (move_minibuffers_onto_frame): Renamed from `move_minibuffer_onto_frame' given two arguments, the old frame and for_deletion, and simplified. Minibuffers are now stacked in the mini-window's ->prev_buffers field. (read_minibuf): Several detailed amendments. (exp_MB_frame): New Lisp_Object, the expired minibuffer's frame. (read_minibuf_unwind): Search for the expired minibuffer's frame, rather than taking it from (unreliable) variables. Switch temporarily to this frame for tidying up operations. (minibuffer_unwind): New function which pops a stacked minibuffer. (syms_of_minibuf): Call staticpro for the two new Lisp variables. * src/window.c (Fset_window_configuration): Don't record minibuffers with record-window-buffer. * src/xdisp.c (gui_consider_frame_title): Remove redundant Fselect_window, which caused an unwanted frame switch. Amend the arguments to format_mode_line_unwind_data to match.
Diffstat (limited to 'src/window.c')
-rw-r--r--src/window.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/window.c b/src/window.c
index eb16e2a4338..4d5c7e763ec 100644
--- a/src/window.c
+++ b/src/window.c
@@ -6958,7 +6958,8 @@ the return value is nil. Otherwise the value is t. */)
if (BUFFERP (w->contents)
&& !EQ (w->contents, p->buffer)
- && BUFFER_LIVE_P (XBUFFER (p->buffer)))
+ && BUFFER_LIVE_P (XBUFFER (p->buffer))
+ && (NILP (Fminibufferp (p->buffer, Qnil))))
/* If a window we restore gets another buffer, record the
window's old buffer. */
call1 (Qrecord_window_buffer, window);