circuit handles load commands better

Signed-off-by: Ava Hahn <ava@sunnypup.io>

src/lex.rs

@@ -126,7 +126,7 @@ fn process(document: &String) -> Result<Box<Seg>, String> {
                     delim_stack.push(')');
                 }
                 // begin parsing a string
-                '"' | '\'' | '`' => {
+                '"' | '\'' | '`' if !is_str => {
                     is_str = true;
                     delim_stack.push(c);
                 }