Don't Parse URL with Only Whitespace

damus-c/damus.c

@@ -31,14 +31,16 @@ static void make_cursor(struct cursor *c, const u8 *content, size_t len)
 
 static int consume_until_whitespace(struct cursor *cur, int or_end) {
     char c;
+    bool consumedAtLeastOne = false;
     
     while (cur->p < cur->end) {
         c = *cur->p;
         
-        if (is_whitespace(c))
+        if (is_whitespace(c) && consumedAtLeastOne)
             return 1;
         
         cur->p++;
+        consumedAtLeastOne = true;
     }
     
     return or_end;

damusTests/damusTests.swift

@@ -105,6 +105,14 @@ class damusTests: XCTestCase {
         XCTAssertEqual(parsed[1].is_text, " br")
     }
     
+    func testNoParseUrlWithOnlyWhitespace() {
+        let testString = "https:// "
+        let parsed = parse_mentions(content: testString, tags: [])
+        
+        XCTAssertNotNil(parsed)
+        XCTAssertEqual(parsed[0].is_text, testString)
+    }
+    
     func testParseMentionBlank() {
         let parsed = parse_mentions(content: "", tags: [["e", "event_id"]])