$isdisplaying()

• This function returns 0 if output is being “suppressed”.
• This function returns 1 if output is not being “suppressed”
• Output is NEVER “suppressed” in the following circumstances
• The /ECHO command turns off the suppressed value unless you specify the /ECHO -SAY option
• The /SENDLINE command turns off the suppressed value.
• Output is “suppressed” in the following circumstances:
  • During the /load command
  • Whenever a command or alias is executed and is prefixed with the caret modifier (ie, ^msg)
• Whenever a /ON hook of type “QUIET” or “SILENT” is being executed.
  • All commands executed in such an /ON are treated as if they had been prefixed with a caret! This is important to understand!
• Whenever all /exec processes are being killed for administrative reasons (at shutdown, or when a SIGUSR1 is received)
• Whenever the /HELP window is being destroyed.
• The /on send_* hooks (/on send_msg, /on send_public, /on send_notice, etc) ARE NOT HOOKED when output is being suppressed.

This function tells you whether or not the /ECHO -SAY command will actually output the string or not. Maybe you'd rather log something when output is suppressed rather than displaying it.

The return value is either 0 or 1, depending on whether output is currently being suppressed.