From ed217ad07e0f914d44a23857a98c9daed0b04cdd Mon Sep 17 00:00:00 2001
From: John Denker <jsd@av8n.com>
Date: Thu, 11 Nov 2021 14:22:13 -0700
Subject: allow capital Greek letters

---
 parser.php | 27 ++++++++++++++++++++++++++-
 1 file changed, 26 insertions(+), 1 deletion(-)

diff --git a/parser.php b/parser.php
index 4423c38..80e01c2 100644
--- a/parser.php
+++ b/parser.php
@@ -623,7 +623,32 @@ class qtype_algebra_parser_variable extends qtype_algebra_parser_term {
         'phi',
         'chi',
         'psi',
-        'omega'
+        'omega',
+
+        'Alpha',
+        'Beta',
+        'Gamma',
+        'Delta',
+        'Epsilon',
+        'Zeta',
+        'Eta',
+        'Theta',
+        'Iota',
+        'Kappa',
+        'Lambda',
+        'Mu',
+        'Nu',
+        'Xi',
+        'Omicron',
+        'Pi',
+        'Rho',
+        'Sigma',
+        'Tau',
+        'Upsilon',
+        'Phi',
+        'Chi',
+        'Psi',
+        'Omega',
      );
 
     /**
-- 
cgit v1.2.3