Call 'window-size-change-functions' for mini-windows

* src/window.c (grow_mini_window, shrink_mini_window): Set the
frame's 'window_sizes_changed' flag.
* src/xdisp.c (redisplay_internal): Call the hooks on
'window-size-change-functions' if the call to 'echo_area_display'
sets the frame's 'window_sizes_changed' flag.
(syms_of_xdisp) <window-size-change-functions>:
Update doc string to indicate the mini-window resizes trigger a
call to the hooks, and don't promise that will happen "before
redisplay".  (Bug#19576, Bug#21333)

* doc/lispref/windows.texi (Window Hooks): Update the description
of 'window-size-change-functions'.

1 files changed, 4 insertions, 4 deletions

diff --git a/doc/lispref/windows.texi b/doc/lispref/windows.texi
index 357247ef433..d0f62549a5b 100644
--- a/doc/lispref/windows.texi
+++ b/doc/lispref/windows.texi
@@ -4264,10 +4264,10 @@ work.
 @end defvar
 
 @defvar window-size-change-functions
-This variable holds a list of functions to be called if the size of any
-window changes for any reason.  The functions are called just once per
-redisplay, and just once for each frame on which size changes have
-occurred.
+This variable holds a list of functions to be called if the size of
+any window changes for any reason.  The functions are called at the
+beginning of a redisplay cycle, and just once for each frame on which
+size changes have occurred.
 
 Each function receives the frame as its sole argument.  There is no
 direct way to find out which windows on that frame have changed size, or