Improve editor open URL command to open the selected portion of URL (#21825)

Closes #21718

Just like in Vim, if a URL is selected, it opens exactly that portion of
the URL. Otherwise, if only the cursor is on a URL, it opens the entire
URL.

Zed currently does the latter. This PR also adds support for the former.


https://github.com/user-attachments/assets/8bdd2952-ceec-487c-b27a-5cea4258eb03

Release Notes:

- Updated the `editor: open url` to also handle the selected portion of
a URL.

crates/editor/src/editor.rs

@@ -176,7 +176,7 @@ use workspace::{
 };
 use workspace::{Item as WorkspaceItem, OpenInTerminal, OpenTerminal, TabBarSettings, Toast};
 
-use crate::hover_links::find_url;
+use crate::hover_links::{find_url, find_url_from_range};
 use crate::signature_help::{SignatureHelpHiddenBy, SignatureHelpState};
 
 pub const FILE_HEADER_HEIGHT: u32 = 2;
@@ -9293,23 +9293,42 @@ impl Editor {
     }
 
     pub fn open_url(&mut self, _: &OpenUrl, cx: &mut ViewContext<Self>) {
-        let position = self.selections.newest_anchor().head();
-        let Some((buffer, buffer_position)) =
-            self.buffer.read(cx).text_anchor_for_position(position, cx)
+        let selection = self.selections.newest_anchor();
+        let head = selection.head();
+        let tail = selection.tail();
+
+        let Some((buffer, start_position)) =
+            self.buffer.read(cx).text_anchor_for_position(head, cx)
         else {
             return;
         };
 
-        cx.spawn(|editor, mut cx| async move {
-            if let Some((_, url)) = find_url(&buffer, buffer_position, cx.clone()) {
+        let end_position = if head != tail {
+            let Some((_, pos)) = self.buffer.read(cx).text_anchor_for_position(tail, cx) else {
+                return;
+            };
+            Some(pos)
+        } else {
+            None
+        };
+
+        let url_finder = cx.spawn(|editor, mut cx| async move {
+            let url = if let Some(end_pos) = end_position {
+                find_url_from_range(&buffer, start_position..end_pos, cx.clone())
+            } else {
+                find_url(&buffer, start_position, cx.clone()).map(|(_, url)| url)
+            };
+
+            if let Some(url) = url {
                 editor.update(&mut cx, |_, cx| {
                     cx.open_url(&url);
                 })
             } else {
                 Ok(())
             }
-        })
-        .detach();
+        });
+
+        url_finder.detach();
     }
 
     pub fn open_file(&mut self, _: &OpenFile, cx: &mut ViewContext<Self>) {