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void
layoutmenu(const Arg *arg) {
FILE *p;
char c[3], *s;
int i;
if (!(p = popen(layoutmenu_cmd, "r")))
return;
s = fgets(c, sizeof(c), p);
pclose(p);
if (!s || *s == '\0' || c[0] == '\0')
return;
i = atoi(c);
setlayout(&((Arg) { .v = &layouts[i] }));
}
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