[hackers] [st] Fix selection: selscroll || Jakub Leszczak

[git]

commit 045a0fab4f80b57f4a982ae6bc5f33fe21d66111
Author:     Jakub Leszczak <sza...@gecc.xyz>
AuthorDate: Wed May 6 13:36:59 2020 +0200
Commit:     Hiltjo Posthuma <hil...@codemadness.org>
CommitDate: Tue May 12 15:38:17 2020 +0200

    Fix selection: selscroll

diff --git a/st.c b/st.c
index 7c15d5f..0d35613 100644
--- a/st.c
+++ b/st.c
@@ -1106,27 +1106,17 @@ selscroll(int orig, int n)
        if (sel.ob.x == -1)
                return;
 
-       if (BETWEEN(sel.ob.y, orig, term.bot) || BETWEEN(sel.oe.y, orig, 
term.bot)) {
-               if ((sel.ob.y += n) > term.bot || (sel.oe.y += n) < term.top) {
+       if (BETWEEN(sel.nb.y, orig, term.bot) != BETWEEN(sel.ne.y, orig, 
term.bot)) {
+               selclear();
+       } else if (BETWEEN(sel.nb.y, orig, term.bot)) {
+               sel.ob.y += n;
+               sel.oe.y += n;
+               if (sel.ob.y < term.top || sel.ob.y > term.bot ||
+                   sel.oe.y < term.top || sel.oe.y > term.bot) {
                        selclear();
-                       return;
-               }
-               if (sel.type == SEL_RECTANGULAR) {
-                       if (sel.ob.y < term.top)
-                               sel.ob.y = term.top;
-                       if (sel.oe.y > term.bot)
-                               sel.oe.y = term.bot;
                } else {
-                       if (sel.ob.y < term.top) {
-                               sel.ob.y = term.top;
-                               sel.ob.x = 0;
-                       }
-                       if (sel.oe.y > term.bot) {
-                               sel.oe.y = term.bot;
-                               sel.oe.x = term.col;
-                       }
+                       selnormalize();
                }
-               selnormalize();
        }
 }