import { IScopedCodeOverride } from '../../overrides/tokens';
/**
 * Line magics do not have to start with the new line, for example:
 *    x = !ls
 *    x = %ls
 *    x =%ls
 * are all valid.
 *
 * The percent may also appear in strings, e.g. ls('%').
 *
 * IPython allows magics on start of a line or in assignments (but only there!), thus:
 *    x = (!ls)
 * is invalid syntax!
 *
 * Therefore we can require that the match starts with either:
 * - zero or more whitespaces right after the beginning of a line, or
 * - variable then equals (with optional whitespaces)
 *
 * This will not always work: e.g.:
 *    x['a = !ls'] = !ls
 * is perfectly valid IPython, but regular expressions cannot help here.
 *
 * Look behind could be used to avoid capturing the group,
 * but at the time of writing support is only at 77%.
 */
export declare const LINE_MAGIC_PREFIX = "^(\\s*|\\s*\\S+\\s*=\\s*)";
export declare const PYTHON_IDENTIFIER = "([^?\\s'\"\\(\\)-\\+\\/#]+)";
export declare let overrides: IScopedCodeOverride[];