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16.7.1 Automatic input mode

There are two possible ways DomTerm can detect cooked vs raw mode:

• The operating system’s terminal driver can send an indication when the terminal switches between cooked and raw.

  Unfortunately, few modern operating systems provide a good way to request such notication. Linux has the EXTPROC flag which is inspired by the System V Streams packet mode. This adds an extra indicator byte to the terminal input stream. This mode is enabled by the domterm --tty-packet-mode=extproc command-line option. This is the default when available.

• DomTerm can lazily check. When you type a character in the DomTerm terminal, it sends a special encoding to the domterm server, which checks the mode of the terminal: If the PTY is in raw mode, the character is sent to the application. If the PTY is in cooked mode, the character is sent back to the DomTerm front-end, which enters line-edit mode, inserting the character in the input area. Subsequent characters (until Enter) are handled locally by DomTerm without a trip to the backend.