Fix copy of line with len = 0 - st - Simple Terminal
       
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       ---
 (DIR) commit 5d2d9d540d84761cf11648ea42a6413001a5d7b9
 (DIR) parent a1ed5071e54e4f8ce765c07d5415da7d8cedf618
 (HTM) Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
       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(-)
       ---
 (DIR) 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];