From 99ffdd4e6e07349011dd7df8cef0d444a149fbc3 Mon Sep 17 00:00:00 2001
From: Andrew Cowie <istathar@gmail.com>
Date: Sun, 22 Mar 2026 21:44:16 +1100
Subject: [PATCH] Fix parsing of expressions with multiple integral parameters

---
 examples/prototype/AirlockPowerdown.tq |  4 ++--
 src/parsing/checks/parser.rs           | 14 ++++++++++++++
 src/parsing/parser.rs                  | 17 +++++++++++++++--
 3 files changed, 31 insertions(+), 4 deletions(-)

diff --git a/examples/prototype/AirlockPowerdown.tq b/examples/prototype/AirlockPowerdown.tq
index 852c0593..fab5e1d9 100644
--- a/examples/prototype/AirlockPowerdown.tq
+++ b/examples/prototype/AirlockPowerdown.tq
@@ -21,7 +21,7 @@ node1_htr_avail_16 :
 # Inhibiting Node 1 B HTRS (1 to 6)
 
     @pcs
-    { foreach node in seq(6) }
+    { foreach node in seq(1, 6) }
         1.  Check Availability
         2.  Perform { cmd("Inhibit") }
         3.  Check Availability
@@ -32,7 +32,7 @@ node1_htr_avail_79 :
 # Inhibiting Node 1 B HTRS (7 to 9)
 
     @pcs
-    { foreach node in seq(9) }
+    { foreach node in seq(7, 9) }
         1.  Check Availability
         2.  Perform { cmd("Inhibit") }
         3.  Check Availability
diff --git a/src/parsing/checks/parser.rs b/src/parsing/checks/parser.rs
index c16ba147..409661df 100644
--- a/src/parsing/checks/parser.rs
+++ b/src/parsing/checks/parser.rs
@@ -1174,6 +1174,20 @@ echo "Done"```) }"#,
         }))
     );
 
+    // Test function with multiple integer parameters
+    input.initialize("{ seq(1, 6) }");
+    let result = input.read_code_block();
+    assert_eq!(
+        result,
+        Ok(Expression::Execution(Function {
+            target: Identifier("seq"),
+            parameters: vec![
+                Expression::Number(Numeric::Integral(1)),
+                Expression::Number(Numeric::Integral(6))
+            ]
+        }))
+    );
+
     // Test function with decimal quantity parameter
     input.initialize("{ wait(2.5 s, \"yes\") }");
     let result = input.read_code_block();
diff --git a/src/parsing/parser.rs b/src/parsing/parser.rs
index 0be2a9a2..ec1cbd71 100644
--- a/src/parsing/parser.rs
+++ b/src/parsing/parser.rs
@@ -2433,9 +2433,22 @@ impl<'i> Parser<'i> {
                             inner.parse_string_pieces(inner.source)
                         })?;
                     params.push(Expression::String(parts));
-                } else if is_numeric(content) {
-                    let numeric = outer.read_numeric()?;
+                } else if is_numeric_quantity(content) {
+                    let numeric = outer.read_numeric_quantity()?;
                     params.push(Expression::Number(numeric));
+                } else if is_numeric_integral(content)
+                    || content
+                        .as_bytes()
+                        .first()
+                        .is_some_and(|b| b.is_ascii_digit())
+                    || content.starts_with('-')
+                        && content
+                            .as_bytes()
+                            .get(1)
+                            .is_some_and(|b| b.is_ascii_digit())
+                {
+                    let decimal = outer.read_decimal_part()?;
+                    params.push(Expression::Number(Numeric::Integral(decimal.number)));
                 } else {
                     let name = outer.read_identifier()?;
                     params.push(Expression::Variable(name));