From 8c801426a59d0514e65c5802e7bd1d87068794fc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Patrick=20L=C3=BChne?= <patrick@luehne.de>
Date: Fri, 5 Jun 2020 18:50:09 +0200
Subject: [PATCH] Allow U, V, and W for program variables

---
 src/ast.rs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/ast.rs b/src/ast.rs
index 1892125..66ce33c 100644
--- a/src/ast.rs
+++ b/src/ast.rs
@@ -422,7 +422,10 @@ impl VariableDeclaration
 						| Some('L')
 						| Some('M')
 						| Some('N') => return Ok(crate::Domain::Integer),
-						Some('X')
+						Some('U')
+						| Some('V')
+						| Some('W')
+						| Some('X')
 						| Some('Y')
 						| Some('Z') => return Ok(crate::Domain::Program),
 						Some('_') => continue,