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+# $EPIC: ischannel.txt,v 1.2 2006/08/01 03:40:36 sthalik Exp $
+======Synopsis:======
+$__ischannel__(<channel name>)
+======Technical:======
+   * This function returns 1 if <channel name> is a valid channel name, and 0 if it is not a valid channel name.
+   * A channel is "valid" if it begins with the plus character, ('+'), the hash character ('#'), the ampersand ('&'), or the bang ('!').
+   * This function does **NOT** tell you whether or not a channel exists.
+======Practical:======
+Some scripts like to prefix the # character to a channel name if you
+try to join a channel that isn't valid, as a shortcut.  Such as:
+<file>
+alias join (channel, ...) {
+  if (ischannel($channel)) {
+    //join $channel $*
+  } else {
+    //join #$channel $*
+  }
+}
+</file>
+======Returns:======
+<file>
+if the argument is a valid name for a channel
+if not.
+</file>
+======Examples:======
+<file>
+$ischannel(#blah)              returns true
+$ischannel(&blah)              returns true
+$ischannel(blah)               returns false
+</file>
+======History:======
+This function first appeared in ircII-2.2pre1