1 files changed, 2 insertions, 0 deletions

diff --git a/src/termchar.h b/src/termchar.h
index 7741292695e..b193da4e492 100644
--- a/src/termchar.h
+++ b/src/termchar.h
@@ -30,6 +30,8 @@ extern int line_ins_del_ok;	/* Terminal can insert and delete lines */
 extern int char_ins_del_ok;     /* Terminal can insert and delete chars */
 extern int scroll_region_ok;    /* Terminal supports setting the scroll
                                    window */
+extern int scroll_region_cost;  /* Cost of setting the scroll window,
+                                   measured in characters */
 extern int memory_below_frame;  /* Terminal remembers lines scrolled
                                    off bottom */
 extern int fast_clear_end_of_line; /* Terminal has a `ce' string */