Automatic String Completion support for automatic completion using a group of target strings. #GCompletion provides support for automatic completion of a string using any group of target strings. It is typically used for file name completion as is common in many UNIX shells. A #GCompletion is created using g_completion_new(). Target items are added and removed with g_completion_add_items(), g_completion_remove_items() and g_completion_clear_items(). A completion attempt is requested with g_completion_complete(). When no longer needed, the #GCompletion is freed with g_completion_free(). Items in the completion can be simple strings (e.g. filenames), or pointers to arbitrary data structures. If data structures are used you must provide a #GCompletionFunc in g_completion_new(), which retrieves the item's string from the data structure. You can change the way in which strings are compared by setting a different #GCompletionStrncmpFunc in g_completion_set_compare(). The data structure used for automatic completion. @items: list of target items (strings or data structures). @func: function which is called to get the string associated with a target item. It is %NULL if the target items are strings. @prefix: the last prefix passed to g_completion_complete(). @cache: the list of items which begin with @prefix. @strncmp_func: Creates a new #GCompletion. @func: the function to be called to return the string representing an item in the #GCompletion, or %NULL if strings are going to be used as the #GCompletion items. @Returns: the new #GCompletion. Specifies the type of the function passed to g_completion_new(). It should return the string corresponding to the given target item. This is used when you use data structures as #GCompletion items. @Param1: the completion item. @Returns: the string corresponding to the item. Adds items to the #GCompletion. @cmp: the #GCompletion. @items: the list of items to add. Removes items from a #GCompletion. @cmp: the #GCompletion. @items: the items to remove. Removes all items from the #GCompletion. @cmp: the #GCompletion. Attempts to complete the string @prefix using the #GCompletion target items. @cmp: the #GCompletion. @prefix: the prefix string, typically typed by the user, which is compared with each of the items. @new_prefix: if non-%NULL, returns the longest prefix which is common to all items that matched @prefix, or %NULL if no items matched @prefix. This string should be freed when no longer needed. @Returns: the list of items whose strings begin with @prefix. This should not be changed. @cmp: @prefix: @new_prefix: @Returns: Sets the function to use for string comparisons. The default string comparison function is strncmp(). @cmp: a #GCompletion. @strncmp_func: the string comparison function. Specifies the type of the function passed to g_completion_set_compare(). This is used when you use strings as #GCompletion items. @s1: string to compare with @s2. @s2: string to compare with @s1. @n: maximal number of bytes to compare. @Returns: an integer less than, equal to, or greater than zero if the first @n bytes of @s1 is found, respectively, to be less than, to match, or to be greater than the first @n bytes of @s2. Frees all memory used by the #GCompletion. @cmp: the #GCompletion.