Remove non defined behaviour in selcopy - st - Personal fork of st
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       ---
 (DIR) commit 6521b5dc32d9bdc4d8826324cb7b2877910cc633
 (DIR) parent a8d5870073af14aa08032ab8520c5fe17bb8a1e8
 (HTM) Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
       Date:   Fri, 31 Jan 2014 17:30:00 +0100
       
       Remove non defined behaviour in selcopy
       
       It is not defined when lateral effects of expressions are
       calculated, so an expression as:
       
               --last >= gp && !(selected(last - gp, y)
       
       is non portable.
       
       Diffstat:
         M st.c                                |       9 +++++----
       
       1 file changed, 5 insertions(+), 4 deletions(-)
       ---
 (DIR) diff --git a/st.c b/st.c
       @@ -953,11 +953,12 @@ selcopy(void) {
                        /* append every set & selected glyph to the selection */
                        for(y = sel.nb.y; y < sel.ne.y + 1; y++) {
                                gp = &term.line[y][0];
       -                        last = gp + term.col;
       +                        last = &gp[term.col-1];
        
       -                        while(--last >= gp && !(selected(last - gp, y) && \
       -                                                strcmp(last->c, " ") != 0))
       -                                /* nothing */;
       +                        while(last >= gp && !(selected(last - gp, y) &&
       +                                              strcmp(last->c, " ") != 0)) {
       +                                --last;
       +                        }
        
                                for(x = 0; gp <= last; x++, ++gp) {
                                        if(!selected(x, y) || (gp->mode & ATTR_WDUMMY))