Ignores insignificant whitespace, diacritics and is case insensitive. Can ignore comments/strings or search explicitly inside them. Matches camelCase and snake_case identifiers, 0 to NULL to nullptr. Does not distinguish between numeric notations. Optionally ignores all syntactic tokens, or braces, brackets or parentheses in particular. Ignores boomer comment decorations. Etc. For all specific options, see the docs.