diff options
Diffstat (limited to 'position.c')
| -rw-r--r-- | position.c | 26 |
1 files changed, 19 insertions, 7 deletions
diff --git a/position.c b/position.c index ae3899c1e95e2..8a65ed4128fe9 100644 --- a/position.c +++ b/position.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 1984-2017 Mark Nudelman + * Copyright (C) 1984-2019 Mark Nudelman * * You may distribute under the terms of either the GNU General Public * License or the Less License, as specified in the README file. @@ -22,7 +22,7 @@ #include "position.h" static POSITION *table = NULL; /* The position table */ -static int table_size; +static int table_size = 0; extern int sc_width, sc_height; @@ -92,7 +92,7 @@ add_back_pos(pos) * Initialize the position table, done whenever we clear the screen. */ public void -pos_clear() +pos_clear(VOID_PARAM) { int i; @@ -104,7 +104,7 @@ pos_clear() * Allocate or reallocate the position table. */ public void -pos_init() +pos_init(VOID_PARAM) { struct scrpos scrpos; @@ -150,7 +150,7 @@ onscreen(pos) * See if the entire screen is empty. */ public int -empty_screen() +empty_screen(VOID_PARAM) { return (empty_lines(0, sc_height-1)); } @@ -187,8 +187,20 @@ get_scrpos(scrpos, where) switch (where) { - case TOP: i = 0; dir = +1; last = sc_height-2; break; - default: i = sc_height-2; dir = -1; last = 0; break; + case TOP: + i = 0; dir = +1; last = sc_height-2; + break; + case BOTTOM: case BOTTOM_PLUS_ONE: + i = sc_height-2; dir = -1; last = 0; + break; + default: + i = where; + if (table[i] == NULL_POSITION) { + scrpos->pos = NULL_POSITION; + return; + } + /* Values of dir and last don't matter after this. */ + break; } /* |