Fix initialization of user-defined fringe bitmaps in daemon mode

* src/fringe.c (gui_init_fringe): Rename from w32_init_fringe
or x_cr_init_fringe, and make unconditionally compiled; all
callers changed.  Do nothing if the frame's
redisplay_interface doesn't implement the define_fringe_bitmap
method.  Set up any user-defined fringe bitmaps in addition to
the standard bitmaps.
Suggested by Liam Quinlan <liamkquinlan@gmail.com> in
https://lists.gnu.org/archive/html/emacs-devel/2019-08/msg00259.html.

(w32_reset_fringes) [HAVE_NTGUI]: Do nothing if the frame's
redisplay_interface doesn't implement the
destroy_fringe_bitmap method.

* src/w32fns.c (Fx_create_frame): Call gui_init_fringe when
the first GUI frame is created for this session.
* src/dispextern.h (w32_init_fringe): Rename to
gui_init_fringe and make unconditional.
(x_cr_init_fringe): Remove prototype.

5 files changed, 25 insertions, 16 deletions

diff --git a/src/dispextern.h b/src/dispextern.h
index 4e947daa253..05f199ff353 100644
--- a/src/dispextern.h
+++ b/src/dispextern.h
@@ -3360,13 +3360,11 @@ void draw_row_fringe_bitmaps (struct window *, struct glyph_row *);
 bool draw_window_fringes (struct window *, bool);
 bool update_window_fringes (struct window *, bool);
 
+void gui_init_fringe (struct redisplay_interface *);
+
 #ifdef HAVE_NTGUI
-void w32_init_fringe (struct redisplay_interface *);
 void w32_reset_fringes (void);
 #endif
-#ifdef USE_CAIRO
-void x_cr_init_fringe (struct redisplay_interface *);
-#endif
 
 extern unsigned row_hash (struct glyph_row *);
 
diff --git a/src/fringe.c b/src/fringe.c
index d0d599223d5..4c5a4d748fb 100644
--- a/src/fringe.c
+++ b/src/fringe.c
@@ -1765,27 +1765,32 @@ init_fringe (void)
   fringe_faces = xzalloc (max_fringe_bitmaps * sizeof *fringe_faces);
 }
 
-#if defined (HAVE_NTGUI) || defined (USE_CAIRO)
-
 void
-#ifdef HAVE_NTGUI
-w32_init_fringe (struct redisplay_interface *rif)
-#else
-x_cr_init_fringe (struct redisplay_interface *rif)
-#endif
+gui_init_fringe (struct redisplay_interface *rif)
 {
   int bt;
 
-  if (!rif)
+  if (!rif || !rif->define_fringe_bitmap)
     return;
 
+  /* Set up the standard fringe bitmaps.  */
   for (bt = NO_FRINGE_BITMAP + 1; bt < MAX_STANDARD_FRINGE_BITMAPS; bt++)
     {
       struct fringe_bitmap *fb = &standard_bitmaps[bt];
       rif->define_fringe_bitmap (bt, fb->bits, fb->height, fb->width);
     }
+
+  /* Set up user-defined fringe bitmaps that might have been defined
+     before the frame of this kind was initialized.  This can happen
+     if Emacs is started as a daemon and the init files define fringe
+     bitmaps.  */
+  for ( ; bt < max_used_fringe_bitmap; bt++)
+    {
+      struct fringe_bitmap *fb = fringe_bitmaps[bt];
+      if (fb)
+	rif->define_fringe_bitmap (bt, fb->bits, fb->height, fb->width);
+    }
 }
-#endif
 
 #ifdef HAVE_NTGUI
 void
@@ -1795,7 +1800,7 @@ w32_reset_fringes (void)
   int bt;
   struct redisplay_interface *rif = FRAME_RIF (SELECTED_FRAME ());
 
-  if (!rif)
+  if (!rif || !rif->destroy_fringe_bitmap)
     return;
 
   for (bt = NO_FRINGE_BITMAP + 1; bt < max_used_fringe_bitmap; bt++)
diff --git a/src/w32fns.c b/src/w32fns.c
index fc80e018834..d6fd8f53490 100644
--- a/src/w32fns.c
+++ b/src/w32fns.c
@@ -5798,6 +5798,12 @@ DEFUN ("x-create-frame", Fx_create_frame, Sx_create_frame,
   f->output_data.w32 = xzalloc (sizeof (struct w32_output));
   FRAME_FONTSET (f) = -1;
 
+  /* Need to finish setting up of user-defined fringe bitmaps that
+     were defined before the first GUI frame was created (e.g., while
+     in daemon mode).  */
+  if (!f->terminal->reference_count)
+    gui_init_fringe (f->terminal->rif);
+
   fset_icon_name (f, gui_display_get_arg (dpyinfo,
                                           parameters,
                                           Qicon_name,
diff --git a/src/w32term.c b/src/w32term.c
index ad96287a43a..e5874f2d365 100644
--- a/src/w32term.c
+++ b/src/w32term.c
@@ -7299,7 +7299,7 @@ w32_term_init (Lisp_Object display_name, char *xrm_option, char *resource_name)
      horizontally reflected compared to how they appear on X, so we
      need to bitswap and convert to unsigned shorts before creating
      the bitmaps.  */
-  w32_init_fringe (terminal->rif);
+  gui_init_fringe (terminal->rif);
 
   unblock_input ();
 
diff --git a/src/xterm.c b/src/xterm.c
index bbe68ef6221..0d224063d76 100644
--- a/src/xterm.c
+++ b/src/xterm.c
@@ -13531,7 +13531,7 @@ x_initialize (void)
 #endif
 
 #ifdef USE_CAIRO
-  x_cr_init_fringe (&x_redisplay_interface);
+  gui_init_fringe (&x_redisplay_interface);
 #endif
 
   /* Note that there is no real way portable across R3/R4 to get the