diff -up a/st.c b/st.c
--- a/st.c	2026-02-12 14:56:55.248311919 -0300
+++ b/st.c	2026-02-12 14:36:36.827197795 -0300
@@ -2513,21 +2513,21 @@ externalpipe(const Arg *arg)
         /* ignore sigpipe for now, in case child exists early */
         oldsigpipe = signal(SIGPIPE, SIG_IGN);
         newline = 0;
-	for (n = 0; n < term.row; n++) {
-		bp = term.line[n];
-		lastpos = MIN(tlinelen(n) + 1, term.col) - 1;
-                if (lastpos < 0)
-                        break;
-                end = &bp[lastpos + 1];
-                for (; bp < end; ++bp)
-                        if (xwrite(to[1], buf, utf8encode(bp->u, buf)) < 0)
-                                break;
-		if ((newline = term.line[n][lastpos].mode & ATTR_WRAP))
-                        continue;
-                if (xwrite(to[1], "\n", 1) < 0)
-                        break;
-                newline = 0;
-        }
+	int histlen = term.screen[0].cur < term.screen[0].size
+		? term.screen[0].cur
+		: term.screen[0].size;
+	int total = histlen + term.row;
+	for (int n = -histlen; n < term.row; n++) {
+		Line line = TLINE(n);
+		int len = tlinelen(n);
+		for (int i = 0; i < len; i++) {
+			char buf[UTF_SIZ];
+			if (xwrite(to[1], buf, utf8encode(line[i].u, buf)) < 0)
+				break;
+		}
+		if (len > 0 && !(line[len - 1].mode & ATTR_WRAP))
+			xwrite(to[1], "\n", 1);
+	}
         if (newline)
                 (void)xwrite(to[1], "\n", 1);
         close(to[1]);