+int columns(void);
+
+int running_in_chroot(void);
+
+char *ellipsize(const char *s, unsigned length, unsigned percent);
+
+int touch(const char *path);
+
+char *unquote(const char *s, const char quote);
+
+#define NULSTR_FOREACH(i, l) \
+ for ((i) = (l); (i) && *(i); (i) = strchr((i), 0)+1)
+