/** Raises the search mlist's flag, like cmd_accept. */
export declare function touchSearchList(): void;
/** Raises the shell mlist's flag, like cmd_accept. */
export declare function touchShellList(): void;
/** Records a new search entry, less's cmdbuf.c:798 entry-modified bit
 *  (set BEFORE the autosave attempt, unlike the list flag). */
export declare function recordSearchEntry(entry: string): void;
/** Records a new shell entry, same entry-modified semantics. */
export declare function recordShellEntry(entry: string): void;
/** Raises less's marks_modified. */
export declare function touchMarks(): void;
/**
 * Loads the search history from the less history file (~/.lesshst).
 *
 * - Uses the same file, format and lookup order as less, so history is
 *   shared with the real pager across sessions and files.
 */
export declare function loadHistory(): void;
/**
 * Saves the search history back to the less history file.
 *
 * - Rewrites only the `.search` section, preserving `.shell` and `.mark`
 *   sections written by less itself.
 * - Skipped when the history is unchanged or disabled via LESSHISTFILE=-.
 */
export declare function saveHistory(): void;