Remove warnings. Improve unknown flags

src/main.rs

@@ -1,4 +1,4 @@
-use engine_q::{lex, lite_parse, LexMode, ParserWorkingSet, Signature, SyntaxShape};
+use engine_q::{ParserWorkingSet, Signature, SyntaxShape};
 
 fn main() -> std::io::Result<()> {
     if let Some(path) = std::env::args().nth(1) {

src/parser.rs

@@ -40,7 +40,7 @@ pub enum SyntaxShape {
     /// A math expression which expands shorthand forms on the lefthand side, eg `foo > 1`
     /// The shorthand allows us to more easily reach columns inside of the row being passed in
     RowCondition,
-    /// A general math expression, eg the `1 + 2` of `= 1 + 2`
+    /// A general math expression, eg `1 + 2`
     MathExpression,
 }
 
@@ -283,6 +283,10 @@ impl ParserWorkingSet {
                         } else if let Some(first) = unmatched_short_flags.first() {
                             error = error.or(Some(ParseError::UnknownFlag(*first)));
                         }
+                    } else if !unmatched_short_flags.is_empty() {
+                        if let Some(first) = unmatched_short_flags.first() {
+                            error = error.or(Some(ParseError::UnknownFlag(*first)));
+                        }
                     }
 
                     for flag in found_short_flags {

src/parser_state.rs

@@ -1,5 +1,4 @@
-use crate::{ParseError, Signature, Span};
-use core::num;
+use crate::{Signature, Span};
 use std::{collections::HashMap, sync::Arc};
 
 pub struct ParserState {
@@ -79,6 +78,7 @@ impl ParserState {
         self.decls.get(decl_id)
     }
 
+    #[allow(unused)]
     pub(crate) fn add_file(&mut self, filename: String, contents: Vec<u8>) -> usize {
         self.files.push((filename, contents));
 
@@ -258,11 +258,11 @@ mod parser_state_tests {
     #[test]
     fn merge_states() {
         let mut parser_state = ParserState::new();
-        let parent_id = parser_state.add_file("test.nu".into(), vec![]);
+        parser_state.add_file("test.nu".into(), vec![]);
         let mut parser_state = Arc::new(parser_state);
 
         let mut working_set = ParserWorkingSet::new(Some(parser_state.clone()));
-        let working_set_id = working_set.add_file("child.nu".into(), vec![]);
+        working_set.add_file("child.nu".into(), vec![]);
 
         ParserState::merge_working_set(&mut parser_state, working_set);