From dba2288a13c8a4575a71c59e694d702fde5eea2c Mon Sep 17 00:00:00 2001
From: femshima <49227365+femshima@users.noreply.github.com>
Date: Sun, 14 Jun 2026 13:53:24 +0900
Subject: [PATCH] parse negative position

---
 crates/jlabel-question/src/parse_position.rs | 1 +
 crates/jlabel-question/src/position.rs       | 9 ++++++---
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/crates/jlabel-question/src/parse_position.rs b/crates/jlabel-question/src/parse_position.rs
index cd4f5fc..cd67169 100644
--- a/crates/jlabel-question/src/parse_position.rs
+++ b/crates/jlabel-question/src/parse_position.rs
@@ -333,6 +333,7 @@ mod tests {
         assert_eq!(estimate_position("*_xx-*"), Ok((Undefined(E4), "xx")));
         assert_eq!(estimate_position("*_xx@*"), Ok((Undefined(F4), "xx")));
         assert_eq!(estimate_position("*_xx_*"), Ok((Undefined(G4), "xx")));
+        assert_eq!(estimate_position("*/A:-1?+*"), Ok((SignedRange(A1), "-1?")));
     }
 
     #[test]
diff --git a/crates/jlabel-question/src/position.rs b/crates/jlabel-question/src/position.rs
index 859af52..5bd67d9 100644
--- a/crates/jlabel-question/src/position.rs
+++ b/crates/jlabel-question/src/position.rs
@@ -125,8 +125,11 @@ fn range_i8<S: AsRef<str>>(s: S) -> Result<Range<i8>, ParseError> {
             let d = s[..s.len() - 1]
                 .parse::<i8>()
                 .map_err(ParseError::FailWildcard)?;
-            debug_assert!(d >= 0);
-            d * 10..(d + 1) * 10
+            if d >= 0 {
+                d * 10..(d + 1) * 10
+            } else {
+                (d - 1) * 10 + 1..d * 10 + 1
+            }
         }
         s => {
             let d = s.parse::<i8>().map_err(ParseError::FailLiteral)?;
@@ -391,7 +394,7 @@ mod tests {
         assert_eq!(range_i8("-?"), Ok(-9..0));
         assert_eq!(range_i8("-??"), Ok(-99..-9));
 
-        // assert_eq!(range_i8("-1?"), Ok(-19..-9));
+        assert_eq!(range_i8("-1?"), Ok(-19..-9));
     }
 
     #[test]