4.34 Terminal Control
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Availability:built-in
tty_size(-Rows, -Columns)
Determine the size of the terminal. Platforms:
Unix
If the system provides ioctl calls for this, these are used and tty_size/2 properly reflects the actual size after a user resize of the window. The ioctl is issued on the file descriptor associated with the user_input stream. As a fallback, the system uses tty_get_capability/3 using li and co capabilities. In this case the reported size reflects the size at the first call and is not updated after a user-initiated resize of the terminal.
Windows
Getting the size of the terminal is provided for swipl-win.exe. The requested value reflects the current size. For the multithreaded version the console that is associated with the user_input stream is used.
ClioPatria (version V3.1.1-40-g9d9e003)