emacs-27 759399c: Improve documentation of 'max-mini-window-height'

[Eli Zaretskii]

branch: emacs-27
commit 759399cdb1d74d282e02725f4e6769566b145e1f
Author: Eli Zaretskii <eliz@gnu.org>
Commit: Eli Zaretskii <eliz@gnu.org>

    Improve documentation of 'max-mini-window-height'
    
    * src/xdisp.c (syms_of_xdisp):
    * doc/lispref/minibuf.texi (Minibuffer Windows): More accurate
    wording in the documentation of 'max-mini-window-height', to
    clarify the meaning of an integer value.
---
 doc/lispref/minibuf.texi | 7 ++++---
 src/xdisp.c              | 6 ++++--
 2 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/doc/lispref/minibuf.texi b/doc/lispref/minibuf.texi
index c161599..ecab882 100644
--- a/doc/lispref/minibuf.texi
+++ b/doc/lispref/minibuf.texi
@@ -2418,9 +2418,10 @@ changes size automatically.  In that case the window 
resizing commands
 
 @defopt max-mini-window-height
 This option provides a maximum height for resizing minibuffer windows
-automatically.  A floating-point number specifies a fraction of the
-frame's height; an integer specifies the maximum number of lines.  The
-default value is 0.25.
+automatically.  A floating-point number specifies the maximum height
+as a fraction of the frame's height; an integer specifies the maximum
+height in units of the frame's canonical character height
+(@pxref{Frame Font}).  The default value is 0.25.
 @end defopt
 
 Note that the values of the above two variables take effect at display
diff --git a/src/xdisp.c b/src/xdisp.c
index ad0ab99..d191ef5 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -34830,8 +34830,10 @@ but does not change the fact they are interpreted as 
raw bytes.  */);
 
   DEFVAR_LISP ("max-mini-window-height", Vmax_mini_window_height,
     doc: /* Maximum height for resizing mini-windows (the minibuffer and the 
echo area).
-If a float, it specifies a fraction of the mini-window frame's height.
-If an integer, it specifies a number of lines.  */);
+If a float, it specifies the maximum height in units of the
+mini-window frame's height.
+If an integer, it specifies the maximum height in units of the
+mini-window frame's default font's height.  */);
   Vmax_mini_window_height = make_float (0.25);
 
   DEFVAR_LISP ("resize-mini-windows", Vresize_mini_windows,