1 files changed, 91 insertions, 0 deletions
diff --git a/src/dispextern.h b/src/dispextern.h
new file mode 100644
index 00000000000..d3dc8941072
--- /dev/null
+++ b/src/dispextern.h
@@ -0,0 +1,91 @@
+/* Interface definitions for display code.
+   Copyright (C) 1985, 1990 Free Software Foundation, Inc.
+
+This file is part of GNU Emacs.
+
+GNU Emacs is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 1, or (at your option)
+any later version.
+
+GNU Emacs is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Emacs; see the file COPYING.  If not, write to
+the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+
+/* Nonzero means do not assume anything about current
+ contents of actual terminal screen */
+
+extern int screen_garbaged;
+
+/* Desired terminal cursor position (to show position of point),
+ origin zero.  */
+
+extern int cursor_hpos, cursor_vpos;
+
+/* Nonzero means last display completed
+   and cursor is really at cursor_hpos, cursor_vpos.
+   Zero means it was preempted. */
+
+extern int display_completed;
+
+/* Nonzero while trying to read keyboard input at main program level.  */
+
+extern int waiting_for_input;
+
+struct matrix
+{
+  /* Height of this matrix.  */
+  int height;
+  /* Width of this matrix.  */
+  int width;
+  /* Vector of used widths of lines, indexed by vertical position.  */
+  int *used;
+  /* Vector of line contents.
+     m->contents[V][H] is the character at position V, H.
+     Note that ->contents[...][screen_width] is always 0
+     and so is ->contents[...][-1].  */
+  unsigned char **contents;
+  /* Long vector from which the line contents are taken.  */
+  unsigned char *total_contents;
+  /* Vector indicating, for each line, whether it is highlighted.  */
+  char *highlight;
+  /* Vector indicating, for each line, whether its contents mean anything.  */
+  char *enable;
+};
+
+/* Current screen contents.  */
+extern struct matrix *current_screen;
+/* Screen contents to be displayed.  */
+extern struct matrix *new_screen;
+/* Temporary buffer for screen contents.  */
+extern struct matrix *temp_screen;
+
+/* Get ready to display on screen line VPOS at column HPOS
+   and return the string where the text of that line is stored.  */
+
+unsigned char *get_display_line ();
+
+/* Buffer used by `message' for formatting a message, and by print.c.  */
+extern char *message_buf;
+
+/* Nonzero means message_buf is being used by print.  */
+extern int message_buf_print;
+
+/* Message to display instead of minibuffer contents
+   This is what the functions error and message make,
+   and command echoing uses it as well.
+   It overrides the minibuf_prompt as well as the buffer.  */
+extern char *echo_area_contents;
+
+/* All costs measured in characters.
+   So no cost can exceed the area of a screen, measured in characters.
+   This should not be more than million.
+   Meanwhile, we can add lots of millions together without overflow.  */
+
+#define INFINITY 1000000