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commit 5ce6c5c0324ef3b7d0f5b9e6e2ba4d87ae0d3bb1
parent ef69118028afad1938951a1f7dff8db2aa557879
Author: Aurélien Aptel <aurelien.aptel@gmail.com>
Date:   Wed,  1 Sep 2010 17:21:09 +0200

fixed IL and DL.

Diffstat:
M
st.c
 | 
30
+++++++++++-------------------

1 file changed, 11 insertions(+), 19 deletions(-)
diff --git a/st.c b/st.c
@@ -392,8 +392,10 @@ ttyread(void) {
 
     if((ret = read(cmdfd, buf, LEN(buf))) < 0)
         die("Couldn't read from shell: %s\n", SERRNO);
-    else
+    else {
+        printf("ttyread %d\n", ret);
         tputs(buf, ret);
+    }
 }
 
 void
@@ -589,21 +591,16 @@ tinsertblankline(int n) {
     Line blank;
     int bot = term.bot;
 
-    if(term.c.y > term.bot)
-        bot = term.row - 1;
-    else if(term.c.y < term.top)
-        bot = term.top - 1;
-    if(term.c.y + n >= bot) {
-        tclearregion(0, term.c.y, term.col-1, bot);
+    if(term.c.y < term.top || term.c.y > term.bot)
         return;
-    }
+
+    LIMIT(n, 0, bot-term.c.y+1);
+    tclearregion(0, bot-n+1, term.col-1, bot);
     for(i = bot; i >= term.c.y+n; i--) {
         /* swap deleted line <-> blanked line */
         blank = term.line[i];
         term.line[i] = term.line[i-n];
         term.line[i-n] = blank;
-        /* blank it */
-        memset(blank, 0, term.col * sizeof(Glyph));
     }
 }
 
@@ -613,21 +610,16 @@ tdeleteline(int n) {
     Line blank;
     int bot = term.bot;
 
-    if(term.c.y > term.bot)
-        bot = term.row - 1;
-    else if(term.c.y < term.top)
-        bot = term.top - 1;
-    if(term.c.y + n >= bot) {
-        tclearregion(0, term.c.y, term.col-1, bot);
+    if(term.c.y < term.top || term.c.y > term.bot)
         return;
-    }
+
+    LIMIT(n, 0, bot-term.c.y+1);
+    tclearregion(0, term.c.y, term.col-1, term.c.y+n-1);
     for(i = term.c.y; i <= bot-n; i++) {
         /* swap deleted line <-> blanked line */
         blank = term.line[i];
         term.line[i] = term.line[i+n];
         term.line[i+n] = blank;
-        /* blank it */
-        memset(blank, 0, term.col * sizeof(Glyph));
     }
 }