From fc2dc83e6c5dbf559fe81b72a7b477d2cd86b649 Mon Sep 17 00:00:00 2001
From: reugenio <yo@reugenio.com>
Date: Sat, 20 Dec 2025 00:13:43 +0100
Subject: [PATCH] =?UTF-8?q?fix(autocomplete):=20Sync=20last=5Ffilter=20en?=
 =?UTF-8?q?=20setText/clear=20+=20auto-cierre=20dropdown=20vac=C3=ADo?=
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Cambios de Gemini para estabilidad IMGUI:
- setText(): Sincroniza last_filter para evitar falsos text_changed
- clear(): Resetea last_filter_len
- autocompleteRect(): Cierra dropdown si options.len == 0

Parte de la solución para corrupción de memoria en cascade AutoComplete.
---
 src/widgets/autocomplete.zig | 19 ++++++++++++++-----
 1 file changed, 14 insertions(+), 5 deletions(-)

diff --git a/src/widgets/autocomplete.zig b/src/widgets/autocomplete.zig
index b0321da..b6a4238 100644
--- a/src/widgets/autocomplete.zig
+++ b/src/widgets/autocomplete.zig
@@ -59,6 +59,10 @@ pub const AutoCompleteState = struct {
         @memcpy(self.buffer[0..copy_len], new_text[0..copy_len]);
         self.len = copy_len;
         self.cursor = copy_len;
+
+        // Sync filter to avoid spurious text_changed events
+        @memcpy(self.last_filter[0..copy_len], new_text[0..copy_len]);
+        self.last_filter_len = copy_len;
     }
 
     /// Clear the input
@@ -68,6 +72,7 @@ pub const AutoCompleteState = struct {
         self.selected = -1;
         self.highlighted = -1;
         self.open = false;
+        self.last_filter_len = 0;
     }
 
     /// Insert a single character at cursor
@@ -403,11 +408,15 @@ pub fn autocompleteRect(
     var filtered_indices: [256]usize = undefined;
     var filtered_count: usize = 0;
 
-    for (options, 0..) |opt, i| {
-        if (filtered_count >= filtered_indices.len) break;
-        if (matchesFilter(opt, filter_text, config.match_mode, config.case_sensitive)) {
-            filtered_indices[filtered_count] = i;
-            filtered_count += 1;
+    if (options.len == 0) {
+        state.closeDropdown();
+    } else {
+        for (options, 0..) |opt, i| {
+            if (filtered_count >= filtered_indices.len) break;
+            if (matchesFilter(opt, filter_text, config.match_mode, config.case_sensitive)) {
+                filtered_indices[filtered_count] = i;
+                filtered_count += 1;
+            }
         }
     }