From 206be2b3480a3b77dc3f87f57e832edeffda96a5 Mon Sep 17 00:00:00 2001
From: Mikal Sande <mikal.sande@gmail.com>
Date: Mon, 26 May 2025 10:04:13 +0200
Subject: [PATCH] Make sure GoPlsAdapter produces output that can be rendered
 as Markdown (#30911)

Closes [#30695](https://github.com/zed-industries/zed/issues/30695)

Adds `diagnostic_message_to_markdown()` to GoLspAdapter to ensure that
Go diagnostic messages are considered Markdown formatted and leading
whitespace is removed to get the Markdown to display properly.

Before:
<img width="805" alt="image"
src="https://github.com/user-attachments/assets/8a09276a-1f45-42de-9744-d7e620d5ebb6"
/>


After:
<img width="805" alt="image"
src="https://github.com/user-attachments/assets/bbe4aeaf-a3c6-4e85-bb10-89b3f4e27965"
/>

Release Notes:

- Fixed display of Go diagnostics, it should be displayed as Markdown
not as escaped string.
---
 crates/languages/src/go.rs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/crates/languages/src/go.rs b/crates/languages/src/go.rs
index bbe0285fc5a265df840f3f6ab6c4cd2994db6932..f4f6950facd947f10051f53b2d3e1f1ae99c9778 100644
--- a/crates/languages/src/go.rs
+++ b/crates/languages/src/go.rs
@@ -374,6 +374,12 @@ impl super::LspAdapter for GoLspAdapter {
             filter_range,
         })
     }
+
+    fn diagnostic_message_to_markdown(&self, message: &str) -> Option<String> {
+        static REGEX: LazyLock<Regex> =
+            LazyLock::new(|| Regex::new(r"(?m)\n\s*").expect("Failed to create REGEX"));
+        Some(REGEX.replace_all(message, "\n\n").to_string())
+    }
 }
 
 fn parse_version_output(output: &Output) -> Result<&str> {