commit c4cd304

ui: don't mark // in input as a command

Prior to this, IsCommand was returning true for inputs starting with two
slashes and thus showing ">"-prompt.

This is a possible confusion (and unwanted behaviour) because the user
might think that they are writing a command but in fact, the message
would be sent verbatim (excluding first slash).

 1@@ -56,7 +56,11 @@ func (e *Editor) Resize(width int) {
 2 }
 3 
 4 func (e *Editor) IsCommand() bool {
 5-	return len(e.text[e.lineIdx]) != 0 && e.text[e.lineIdx][0] == '/'
 6+	line := e.text[e.lineIdx]
 7+
 8+	// Command can't start with two slashes because that's an escape for
 9+	// a literal slash in the message
10+	return len(line) >= 1 && line[0] == '/' && !(len(line) >= 2 && line[1] == '/')
11 }
12 
13 func (e *Editor) TextLen() int {