$chanwin(<window refnum/name>|<channel>)

$chanwin() and $winchan() are the same function.

• If no argument given:
  • Return the current window's current channel.
• If one argument, and it's a window refnum:
  • Return that window's current channel.
• If one argument, and it's a channel:
  • Return the window that the channel belongs to.
• If two arguments, first one is channel, second one is server:
  • Return the window FOR THAT SERVER that the channel belongs to.

/window refnum 2;/join #epic
eval echo $chanwin(2)                   /* returns #epic */
eval echo $chanwin(#epic)               /* returns 2 */

$chanwin() first appeared in EPIC4pre0.034.
$chanwin() was swapped with $winchan() in EPIC4pre1.027
$chanwin() and $winchan() were unified in EPIC4pre1.041
$chanwin() first supported non-current channels in EPIC4pre2.506.