/**
 * Mutable option state shared by the option files, like less
 * opttbl.c's globals. Defaults mirror less's option table.
 */
export declare const opt: {
    howSearch: number;
    bufSpace: number;
    autoBuffers: number;
    clearRepaint: number;
    knowDumb: number;
    quitAtEof: number;
    forceOpen: number;
    quitIfOneScreen: number;
    hiliteSearch: number;
    backScroll: number;
    jumpTarget: number;
    jumpFraction: number;
    shiftFraction: number;
    statusCol: number;
    quitOnIntr: number;
    useLessopen: number;
    prType: number;
    linenums: number;
    quiet: number;
    ctldisp: number;
    squeeze: number;
    tagsFile: string;
    bsMode: number;
    showAttn: number;
    tabStops: number[];
    tabDefault: number;
    noInit: number;
    forwScroll: number;
    quoteOpen: string;
    quoteClose: string;
    tildes: number;
    noKeypad: number;
    followName: number;
    useBackslash: number;
    rscrollChar: string;
    rscrollAttr: "n" | "s" | "d" | "u" | "k";
    noHistDups: number;
    mouseMode: number;
    mouseReverse: number;
    oldBot: number;
    wheelLines: number;
    permaMarks: number;
    linenumWidth: number;
    statusColWidth: number;
    incrSearch: number;
    useColor: number;
    useJsRegexp: number;
    headerLines: number;
    headerCols: number;
    headerStart: number;
    nonumHeaders: number;
    nosearchHeaderLines: number;
    nosearchHeaderCols: number;
    wantFileSize: number;
    noVbell: number;
    noEditWarn: number;
    noShell: number;
    exitFollowOnClose: number;
    showPreprocError: number;
    redrawOnQuit: number;
    noPaste: number;
    hiliteTarget: number;
    intrChar: string;
    autosave: string;
    matchShift: number;
    matchShiftFraction: number;
    emouse: number;
    statusLine: number;
    stopOnFormFeed: number;
    pastEof: number;
    modelines: number;
    procBackspace: number;
    procTab: number;
    procReturn: number;
    wordwrap: number;
    appliedGutter: number;
    lessIsMore: number;
};
/**
 * Restores every option to its table default, like a fresh less.
 *
 * Without this a second pager() call in the same process inherits the
 * first call's -x, -S and friends: less's opttbl.c globals are
 * process-lifetime, and ours outlive a session the same way.
 */
export declare function resetOptions(): void;
/**
 * less keeps sc_width as the complete terminal width. Our renderer stores
 * the text width after reserving the line prefix, so anything defined in
 * terms of sc_width - every bottom-row measurement, since the command
 * line never carries the gutter - must add that reservation back.
 *
 * It lives here, in the leaf, so the low-level display code can ask
 * without pulling the whole option table in behind it.
 */
export declare const fullScreenWidth: () => number;