Function strbuf_avail

strbuf.h:143–146

* Determine the amount of allocated but unused memory. */

 * Determine the amount of allocated but unused memory.
 */
static inline size_t strbuf_avail(const struct strbuf *sb)
{
	return sb->alloc ? sb->alloc - sb->len - 1 : 0;
}

/**
 * Ensure that at least this amount of unused memory is available after