fix(deno install): Strip "@..." suffixes from inferred names (#7223)

cli/flags.rs

@@ -757,6 +757,7 @@ The executable name is inferred by default:
   - If the file stem is something generic like 'main', 'mod', 'index' or 'cli',
     and the path has no parent, take the file name of the parent path. Otherwise
     settle with the generic name.
+  - If the resulting name has an '@...' suffix, strip it.
 
 To change the installation root, use --root:
   deno install --allow-net --allow-read --root /usr/local https://deno.land/std/http/file_server.ts

cli/installer.rs

@@ -114,17 +114,16 @@ fn get_installer_root() -> Result<PathBuf, Error> {
 
 fn infer_name_from_url(url: &Url) -> Option<String> {
   let path = PathBuf::from(url.path());
-  let stem = match path.file_stem() {
+  let mut stem = match path.file_stem() {
     Some(stem) => stem.to_string_lossy().to_string(),
     None => return None,
   };
-  if let Some(parent_path) = path.parent() {
-    if stem == "main" || stem == "mod" || stem == "index" || stem == "cli" {
-      if let Some(parent_name) = parent_path.file_name() {
-        return Some(parent_name.to_string_lossy().to_string());
-      }
+  if stem == "main" || stem == "mod" || stem == "index" || stem == "cli" {
+    if let Some(parent_name) = path.parent().and_then(|p| p.file_name()) {
+      stem = parent_name.to_string_lossy().to_string();
     }
   }
+  let stem = stem.splitn(2, '@').next().unwrap().to_string();
   Some(stem)
 }
 
@@ -349,6 +348,24 @@ mod tests {
       Some("main".to_string())
     );
     assert_eq!(infer_name_from_url(&Url::parse("file:///").unwrap()), None);
+    assert_eq!(
+      infer_name_from_url(
+        &Url::parse("https://example.com/abc@0.1.0").unwrap()
+      ),
+      Some("abc".to_string())
+    );
+    assert_eq!(
+      infer_name_from_url(
+        &Url::parse("https://example.com/abc@0.1.0/main.ts").unwrap()
+      ),
+      Some("abc".to_string())
+    );
+    assert_eq!(
+      infer_name_from_url(
+        &Url::parse("https://example.com/abc@def@ghi").unwrap()
+      ),
+      Some("abc".to_string())
+    );
   }
 
   #[test]

docs/tools/script_installer.md

@@ -32,6 +32,7 @@ The executable name is inferred by default:
 - If the file stem is something generic like 'main', 'mod', 'index' or 'cli',
   and the path has no parent, take the file name of the parent path. Otherwise
   settle with the generic name.
+- If the resulting name has an '@...' suffix, strip it.
 
 To change the installation root, use `--root`: