From db244e0492db4f4e6c5b0865a1cd591ba9104ce7 Mon Sep 17 00:00:00 2001
From: Fabian Boehm <FHomborg@gmail.com>
Date: Wed, 5 Feb 2025 22:04:48 +0100
Subject: [PATCH] reader: Only maintain cursor position in non-empty prefix
 search

Otherwise this would always move the cursor to the beginning.

Fixes #11133
---
 src/reader.rs          | 2 +-
 tests/pexpects/bind.py | 8 ++++++++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/reader.rs b/src/reader.rs
index ee9f2fe11..b2f5fb78a 100644
--- a/src/reader.rs
+++ b/src/reader.rs
@@ -1671,7 +1671,7 @@ impl ReaderData {
                 0..self.command_line.len(),
                 new_text,
             );
-            if self.history_search.by_prefix() {
+            if self.history_search.by_prefix() && !self.history_search.search_string().is_empty() {
                 self.command_line
                     .set_position(self.history_search.search_string().len());
             }
diff --git a/tests/pexpects/bind.py b/tests/pexpects/bind.py
index e9c939239..fdbe9b629 100644
--- a/tests/pexpects/bind.py
+++ b/tests/pexpects/bind.py
@@ -364,6 +364,14 @@ send('\x02\x02\x02') # ctrl-b, backward-char
 sendline('\x1bu') # alt+u, upcase word
 expect_prompt("fooBAR")
 
+sendline('bind ctrl-z history-prefix-search-backward')
+expect_prompt()
+sendline("echo this continues")
+expect_prompt()
+send("\x1A")
+sendline(" with this text")
+expect_prompt("this continues with this text")
+
 sendline("""
     bind ctrl-g "
         commandline --insert 'echo foo ar'