[hackers] [st] Use BETWEEN in tinsertblankline and tdeleteline. || noname

[git]

commit f21e47f44a11b9a24a5d5081fea46f5b5f02eadf
Author: noname <non...@inventati.org>
Date:   Tue Apr 22 21:59:01 2014 +0400

    Use BETWEEN in tinsertblankline and tdeleteline.

diff --git a/st.c b/st.c
index 019f53c..92fd7da 100644
--- a/st.c
+++ b/st.c
@@ -1628,18 +1628,14 @@ tinsertblank(int n) {
 
 void
 tinsertblankline(int n) {
-       if(term.c.y < term.top || term.c.y > term.bot)
-               return;
-
-       tscrolldown(term.c.y, n);
+       if(BETWEEN(term.c.y, term.top, term.bot))
+               tscrolldown(term.c.y, n);
 }
 
 void
 tdeleteline(int n) {
-       if(term.c.y < term.top || term.c.y > term.bot)
-               return;
-
-       tscrollup(term.c.y, n);
+       if(BETWEEN(term.c.y, term.top, term.bot))
+               tscrollup(term.c.y, n);
 }
 
 int32_t