stmt/if: collapse else if from else(if( into elseif(

node.go

@@ -739,6 +739,31 @@ func (this *conversionState) convertNoFreeFloating(n_ node.Node) (string, error)
 			return "", parseErr{n, err}
 		}
 
+		//
+
+		// `elseif` is a valid PHP keyword; but `else if` gets treated as `else { if ()`
+		// If our discovered `else` clause has exactly one child If statement,
+		// rewrite it as an else-if clause (and recurse)
+		for n.Else != nil {
+			els, ok := n.Else.(*stmt.Else)
+			if !ok {
+				return "", parseErr{n, fmt.Errorf("expected stmt.Else")}
+			}
+
+			elif, ok := els.Stmt.(*stmt.If)
+			if !ok {
+				break // exit loop
+			}
+
+			n.AddElseIf(stmt.NewElseIf(elif.Cond, elif.Stmt))
+			for _, extraElif := range elif.ElseIf {
+				n.AddElseIf(extraElif)
+			}
+			n.Else = elif.Else // Wipe from future processing
+		}
+
+		//
+
 		ret := "if " + cond + body
 		for _, elif := range n.ElseIf {
 			elif, ok := elif.(*stmt.ElseIf)