From dc129add9e547d5f6b6eebbb96fb519e9dad85e7 Mon Sep 17 00:00:00 2001
From: Johannes Altmanninger <aclopte@gmail.com>
Date: Thu, 16 Jan 2025 23:11:09 +0100
Subject: [PATCH] Assert that autosuggestions are always valid

This documents an invariant established by 532abaddae9 (Invalidate stale
autosuggestions eagerly, 2024-12-25). It was initially broken but fixed in
ba4ead6eada (Stop saving autosuggestions that we can't restore, 2025-01-17).
---
 src/reader.rs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/reader.rs b/src/reader.rs
index bcf462193..6c7b5d56f 100644
--- a/src/reader.rs
+++ b/src/reader.rs
@@ -4881,7 +4881,13 @@ fn update_autosuggestion(&mut self) {
         }
 
         let el = &self.data.command_line;
+        let autosuggestion = &self.autosuggestion;
         if self.is_at_line_with_autosuggestion() {
+            assert!(string_prefixes_string_maybe_case_insensitive(
+                autosuggestion.icase,
+                &el.text()[autosuggestion.search_string_range.clone()],
+                &autosuggestion.text
+            ));
             return;
         }