From 5139ff8e52ab91c1185da53076d70c345b5f95af Mon Sep 17 00:00:00 2001
From: Aaron Zeng <azeng@janestreet.com>
Date: Thu, 5 Feb 2026 12:28:24 -0500
Subject: [PATCH] Do not redefine xref-prompt-for-identifier
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

The correct way to declare a variable as dynamically bound but defined elsewhere is to use defvar with a variable name but no value.  Otherwise, this causes the following unwanted side-effect when pressing `C-h v xref-prompt-for-identifier`:

```
xref-prompt-for-identifier is a variable defined in ‘haskell.el’.
```
---
 haskell.el | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/haskell.el b/haskell.el
index 33e7ac7b..efd0ae48 100644
--- a/haskell.el
+++ b/haskell.el
@@ -324,7 +324,7 @@ If `haskell-process-load-or-reload-prompt' is nil, accept `default'."
              (haskell-interactive-mode-error-backward)
              (haskell-interactive-jump-to-error-line)))))
 
-(defvar xref-prompt-for-identifier nil)
+(defvar xref-prompt-for-identifier)
 
 ;;;###autoload
 (defun haskell-mode-jump-to-tag (&optional next-p)