declare #main-input has


declare #main-input has (binary-mode | text-mode | buffered | unbuffered)


By default, #main-input is read from in text mode: this is the default setting for non-UNIX systems. Additionally, by default #main-input is buffered. declare #main-input has allows this behaviour to be changed explicitly. Changing both the mode and the buffering is possible, but requires two declarations.

For example:

  declare #main-input has binary-mode
  declare #main-input has unbuffered

This declaration should always be used in preference to the newline declaration for performing binary input or output.