GNU History Library. Node: Information About the History List

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2.3.3: Information About the History List

These functions return information about the entire history list or individual list entries.

Function: HIST_ENTRY ** history_list ()
Return a NULL terminated array of HIST_ENTRY which is the current input history. Element 0 of this list is the beginning of time. If there is no history, return NULL.
Function: int where_history ()
Returns the offset of the current history element.
Function: HIST_ENTRY * current_history ()
Return the history entry at the current position, as determined by where_history (). If there is no entry there, return a NULL pointer.
Function: HIST_ENTRY * history_get (int offset)
Return the history entry at position offset, starting from history_base. If there is no entry there, or if offset is greater than the history length, return a NULL pointer.
Function: int history_total_bytes ()
Return the number of bytes that the primary history entries are using. This function returns the sum of the lengths of all the lines in the history.
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