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void
setborderpx(const Arg *arg)
{
Client *c;
int prev_borderpx = selmon->borderpx;
if (arg->i == 0)
selmon->borderpx = borderpx;
else if (selmon->borderpx + arg->i < 0)
selmon->borderpx = 0;
else
selmon->borderpx += arg->i;
for (c = selmon->clients; c; c = c->next)
{
if (c->bw + arg->i < 0)
c->bw = selmon->borderpx = 0;
else
c->bw = selmon->borderpx;
if (c->isfloating || !selmon->lt[selmon->sellt]->arrange)
{
if (arg->i != 0 && prev_borderpx + arg->i >= 0)
resize(c, c->x, c->y, c->w-(arg->i*2), c->h-(arg->i*2), 0);
else if (arg->i != 0)
resizeclient(c, c->x, c->y, c->w, c->h);
else if (prev_borderpx > borderpx)
resize(c, c->x, c->y, c->w + 2*(prev_borderpx - borderpx), c->h + 2*(prev_borderpx - borderpx), 0);
else if (prev_borderpx < borderpx)
resize(c, c->x, c->y, c->w - 2*(borderpx - prev_borderpx), c->h - 2*(borderpx - prev_borderpx), 0);
}
}
arrange(selmon);
}
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