proc boolArg(conf: ConfigRef; n: PNode; name: string; pos: int; default: bool): bool {.
    ...raises: [Exception, ValueError, KeyError, IOError, ERecoverableError], tags: [
    RootEffect, ReadDirEffect, WriteIOEffect, ReadIOEffect, ReadEnvEffect],
    forbids: [].}

proc charArg(conf: ConfigRef; n: PNode; name: string; pos: int; default: char): char {.
    ...raises: [Exception, ValueError, KeyError, IOError, ERecoverableError], tags: [
    RootEffect, ReadDirEffect, WriteIOEffect, ReadIOEffect, ReadEnvEffect],
    forbids: [].}

proc filterReplace(conf: ConfigRef; stdin: PLLStream; filename: AbsoluteFile;
                   call: PNode): PLLStream {.
    ...raises: [Exception, ValueError, KeyError, IOError, ERecoverableError], tags: [
    RootEffect, ReadDirEffect, WriteIOEffect, ReadIOEffect, ReadEnvEffect],
    forbids: [].}

proc filterStrip(conf: ConfigRef; stdin: PLLStream; filename: AbsoluteFile;
                 call: PNode): PLLStream {.
    ...raises: [Exception, ValueError, KeyError, IOError, ERecoverableError], tags: [
    RootEffect, ReadDirEffect, WriteIOEffect, ReadIOEffect, ReadEnvEffect],
    forbids: [].}

proc strArg(conf: ConfigRef; n: PNode; name: string; pos: int; default: string): string {.
    ...raises: [Exception, ValueError, KeyError, IOError, ERecoverableError], tags: [
    RootEffect, ReadDirEffect, WriteIOEffect, ReadIOEffect, ReadEnvEffect],
    forbids: [].}