Fix initial value of frame-inhibit-implied-resize

* src/frame.c (syms_of_frame): Update doc string and default value of
frame-inhibit-implied-resize in NS to not include 'tab-bar-lines,
and non-toolkit X builds to include 'tab-bar-lines.

1 files changed, 17 insertions, 15 deletions

diff --git a/src/frame.c b/src/frame.c
index 099db29598c..f7e65be727d 100644
--- a/src/frame.c
+++ b/src/frame.c
@@ -6268,7 +6268,7 @@ a non-nil value in your init file.  */);
 
   DEFVAR_LISP ("frame-inhibit-implied-resize", frame_inhibit_implied_resize,
                doc: /* Whether frames should be resized implicitly.
-If this option is nil, setting font, menu bar, tool bar, internal
+If this option is nil, setting font, menu bar, tool bar, tab bar, internal
 borders, fringes or scroll bars of a specific frame may resize the frame
 in order to preserve the number of columns or lines it displays.  If
 this option is t, no such resizing is done.  Note that the size of
@@ -6278,8 +6278,8 @@ width of fullwidth frames never change implicitly.
 The value of this option can be also be a list of frame parameters.  In
 this case, resizing is inhibited when changing a parameter that appears
 in that list.  The parameters currently handled by this option include
-`font', `font-backend', `internal-border-width', `menu-bar-lines' and
-`tool-bar-lines'.
+`font', `font-backend', `internal-border-width', `menu-bar-lines',
+`tool-bar-lines' and `tab-bar-lines'.
 
 Changing any of the parameters `scroll-bar-width', `scroll-bar-height',
 `vertical-scroll-bars', `horizontal-scroll-bars', `left-fringe' and
@@ -6290,25 +6290,27 @@ width by the width of one scroll bar provided this option is nil and
 keep it unchanged if this option is either t or a list containing
 `vertical-scroll-bars'.
 
-The default value is \\='(tab-bar-lines) in GTK+, (which means that
-adding/removing a tab bar does not change the frame height),
-\\='(tab-bar-lines tool-bar-lines) on Lucid, Motif and Windows
-\(which means that adding/removing a tool bar or tab bar does not
-change the frame height), nil on all other window systems (which
-means that changing any of the parameters listed above may change
-the size of the frame), and t otherwise (which means the frame size
-never changes implicitly when there's no window system support).
+In NS that use the external tool bar and no tab bar, the default value
+is nil which means that changing any of the parameters listed above
+may change the size of the frame.  In GTK+ that use the external tool
+bar, the default value is \\='(tab-bar-lines) which means that
+adding/removing a tab bar does not change the frame height.  On all
+other types of GUI frames, the default value is \\='(tab-bar-lines
+tool-bar-lines) which means that adding/removing a tool bar or tab bar
+does not change the frame height.  Otherwise it's t which means the
+frame size never changes implicitly when there's no window
+system support.
 
 Note that when a frame is not large enough to accommodate a change of
 any of the parameters listed above, Emacs may try to enlarge the frame
 even if this option is non-nil.  */);
 #if defined (HAVE_WINDOW_SYSTEM)
-#if defined USE_GTK
+#if defined (HAVE_NS)
+  frame_inhibit_implied_resize = Qnil;
+#elif defined (USE_GTK)
   frame_inhibit_implied_resize = list1 (Qtab_bar_lines);
-#elif defined (USE_LUCID) || defined (USE_MOTIF) || defined (HAVE_NTGUI)
-  frame_inhibit_implied_resize = list2 (Qtab_bar_lines, Qtool_bar_lines);
 #else
-  frame_inhibit_implied_resize = Qnil;
+  frame_inhibit_implied_resize = list2 (Qtab_bar_lines, Qtool_bar_lines);
 #endif
 #else
   frame_inhibit_implied_resize = Qt;