Hide everything but content for plain option style

fix #5

src/main.rs

@@ -118,6 +118,9 @@ fn print_file<P: AsRef<Path>>(
     let (_, term_width) = term.size();
     let term_width = term_width as usize;
 
+    // Show file name and bars for all but plain style
+    match options.style {
+        OptionsStyle::LineNumbers | OptionsStyle::Full => {
             print_horizontal_line(&mut handle, '┬', term_width)?;
 
             writeln!(
@@ -129,6 +132,10 @@ fn print_file<P: AsRef<Path>>(
             )?;
 
             print_horizontal_line(&mut handle, '┼', term_width)?;
+        }
+        OptionsStyle::Plain => {}
+    };
+
 
     for (idx, maybe_line) in reader.lines().enumerate() {
         let line_nr = idx + 1;
@@ -147,23 +154,34 @@ fn print_file<P: AsRef<Path>>(
             Style::default().paint(" ")
         };
 
+
+        match options.style {
+            // Show only content for plain style
+            OptionsStyle::Plain => writeln!(
+                handle,
+                "{}", as_terminal_escaped(&regions, options.true_color))?,
+            _ =>
                 writeln!(
                     handle,
                     "{} {} {} {}",
-            Fixed(244).paint(match options.style {
+                    Fixed(244).paint(format!("{:4}", line_nr)),
-                OptionsStyle::Plain => "    ".to_owned(),
+                    // Show git modificiation markers only for full style
-                _ => format!("{:4}", line_nr),
-            }),
                     match options.style {
                         OptionsStyle::Full => line_change,
                         _ => Style::default().paint(" "),
                     },
                     Fixed(GRID_COLOR).paint("│"),
                     as_terminal_escaped(&regions, options.true_color)
-        )?;
+                )?
+        }
     }
 
-    print_horizontal_line(&mut handle, '┴', term_width)?;
+    // Show bars for all but plain style
+    match options.style {
+        OptionsStyle::LineNumbers | OptionsStyle::Full =>
+            print_horizontal_line(&mut handle, '┴', term_width)?,
+        OptionsStyle::Plain => {}
+    };
 
     Ok(())
 }