Assume gemini:// for schemeless URLs in the omnibar

This somewhat arbitrarily requires schemeless URLs to contain at least one period and otherwise consist entirely of alphanumeric characters, to prevent false positives on regular search queries.

Author: Bas De Bue

src/window.rs

@@ -360,7 +360,13 @@ impl Window {
     }
     fn open_omni(&self, v: &str) {
         let url = Url::parse(v)
-            .or_else(|_| Url::parse(&format!("gemini://geminispace.info/search?{}", v)));
+            .or_else(|_| {
+                if v.contains(".") && v.split(".").all(|s| s.chars().all(char::is_alphanumeric)) {
+                    Url::parse(&format!("gemini://{}", v))
+                } else {
+                    Url::parse(&format!("gemini://geminispace.info/search?{}", v))
+                }
+            });
         match url {
             Ok(url) => self.current_tab().spawn_open_url(url),
             Err(e) => error!("Failed to open from omni bar"),