don't store match group lines twice

src/app.rs

@@ -19,11 +19,7 @@ pub struct App<'a> {
 
 impl<'a> App<'a> {
     pub fn match_lines(&self) -> usize {
-        let unmatched_line_count = if self.unmatched.lines.is_empty() {
-            0
-        } else {
-            1
-        };
+        let unmatched_line_count = if self.unmatched.count == 0 { 0 } else { 1 };
         self.matches.len() + 1 + unmatched_line_count
     }
 
@@ -45,7 +41,7 @@ impl<'a> App<'a> {
 
 pub struct LogMatch {
     pub result: Option<MatchResult>,
-    pub lines: Vec<usize>,
+    pub count: usize,
     pub histogram: TimeGraph,
     pub sparkline: String,
     pub all: GroupedLines,
@@ -60,17 +56,18 @@ impl LogMatch {
         for line in lines.iter().map(|line| &all_lines[*line]) {
             histogram.add(line.time);
         }
+        let count = lines.len();
         let grouped = group_lines(all_lines, lines.iter().copied());
         let sparkline = histogram.sparkline::<10>();
         let all = GroupedLines {
             sparkline: sparkline.clone(),
             histogram: histogram.clone(),
-            lines: lines.clone(),
+            lines,
         };
 
         LogMatch {
             result,
-            lines,
+            count,
             histogram,
             sparkline,
             grouped,
@@ -116,7 +113,7 @@ impl LogMatch {
 
 impl LogMatch {
     pub fn count(&self) -> usize {
-        self.lines.len()
+        self.count
     }
 }
 

src/main.rs

@@ -117,7 +117,7 @@ fn main() -> MainResult {
     });
 
     let mut error_lines = Vec::with_capacity(32);
-    let mut parsed_lines = Vec::with_capacity(1024);
+    let mut parsed_lines = Vec::with_capacity(results.len());
     let mut unmatched_lines = Vec::with_capacity(256);
 
     let mut parsed_index = 0;

src/ui/footer.rs

@@ -27,7 +27,7 @@ pub fn footer<'a>(app: &App<'a>, params: FooterParams<'a>) -> Table<'a> {
             Table::new(
                 [Row::new([
                     Text::from(help(page)),
-                    Text::from(format!("{} unmatched items", app.unmatched.lines.len())),
+                    Text::from(format!("{} unmatched items", app.unmatched.count())),
                     Text::from(format!("{} parse errors", app.error_count)),
                 ])],
                 widths,

src/ui/match_list.rs

@@ -30,7 +30,7 @@ pub fn match_list<'a>(app: &'a App<'a>, filter: &Filter) -> ScrollbarTable<'a> {
     ];
 
     let all = log_row(&app.all, app, "All lines");
-    let unmatched = if app.unmatched.lines.is_empty() {
+    let unmatched = if app.unmatched.count() == 0 {
         Either::Right(empty())
     } else {
         Either::Left(once(log_row(&app.unmatched, app, "Unmatched lines")))

src/ui/single_match.rs

@@ -38,7 +38,7 @@ pub fn grouped_lines<'a>(
             Text::from(""),
             Text::from(""),
             Text::from(log_match.sparkline.as_str()),
-            Text::from(log_match.lines.len().to_string()),
+            Text::from(log_match.count().to_string()),
         ]))
         .chain(
             grouped