Fix copy of line with len = 0 - st - Simple Terminal
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---
commit 5d2d9d540d84761cf11648ea42a6413001a5d7b9
parent a1ed5071e54e4f8ce765c07d5415da7d8cedf618
Author: Roberto E. Vargas Caballero 
Date:   Thu, 10 Sep 2015 11:53:11 +0200

Fix copy of line with len = 0

When a line has no any character linelen is 0, so last = &term.line[y][MIN(lastx, linelen-1)]
generated a pointer to the end of the previous line. The best thing we can do in this case
is to add a newline, because we don't have a glyph to print (and consult its state of
wrapping).

Diffstat:
  st.c                                |       5 ++++-

1 file changed, 4 insertions(+), 1 deletion(-)
---
diff --git a/st.c b/st.c
@@ -1004,7 +1004,10 @@ getsel(void)
 
         /* append every set & selected glyph to the selection */
         for (y = sel.nb.y; y <= sel.ne.y; y++) {
-                linelen = tlinelen(y);
+                if ((linelen = tlinelen(y)) == 0) {
+                        *ptr++ = '\n';
+                        continue;
+                }
 
                 if (sel.type == SEL_RECTANGULAR) {
                         gp = &term.line[y][sel.nb.x];