Add padding above headers when no grid

src/controller.rs

@@ -75,7 +75,7 @@ impl<'b> Controller<'b> {
             }
         };
 
-        for input in inputs.into_iter() {
+        for (index, input) in inputs.into_iter().enumerate() {
             match input.open(io::stdin().lock()) {
                 Err(error) => {
                     print_error(&error, writer);
@@ -128,6 +128,7 @@ impl<'b> Controller<'b> {
                         &mut *printer,
                         writer,
                         &mut opened_input,
+                        index != 0,
                         #[cfg(feature = "git")]
                         &line_changes,
                     );
@@ -148,10 +149,11 @@ impl<'b> Controller<'b> {
         printer: &mut dyn Printer,
         writer: &mut dyn Write,
         input: &mut OpenedInput,
+        add_header_padding: bool,
         #[cfg(feature = "git")] line_changes: &Option<LineChanges>,
     ) -> Result<()> {
         if !input.reader.first_line.is_empty() || self.config.style_components.header() {
-            printer.print_header(writer, input)?;
+            printer.print_header(writer, input, add_header_padding)?;
         }
 
         if !input.reader.first_line.is_empty() {

src/printer.rs

@@ -33,7 +33,12 @@ use crate::terminal::{as_terminal_escaped, to_ansi_color};
 use crate::wrapping::WrappingMode;
 
 pub(crate) trait Printer {
-    fn print_header(&mut self, handle: &mut dyn Write, input: &OpenedInput) -> Result<()>;
+    fn print_header(
+        &mut self,
+        handle: &mut dyn Write,
+        input: &OpenedInput,
+        add_header_padding: bool,
+    ) -> Result<()>;
     fn print_footer(&mut self, handle: &mut dyn Write, input: &OpenedInput) -> Result<()>;
 
     fn print_snip(&mut self, handle: &mut dyn Write) -> Result<()>;
@@ -56,7 +61,12 @@ impl SimplePrinter {
 }
 
 impl Printer for SimplePrinter {
-    fn print_header(&mut self, _handle: &mut dyn Write, _input: &OpenedInput) -> Result<()> {
+    fn print_header(
+        &mut self,
+        _handle: &mut dyn Write,
+        _input: &OpenedInput,
+        _add_header_padding: bool,
+    ) -> Result<()> {
         Ok(())
     }
 
@@ -219,7 +229,12 @@ impl<'a> InteractivePrinter<'a> {
 }
 
 impl<'a> Printer for InteractivePrinter<'a> {
-    fn print_header(&mut self, handle: &mut dyn Write, input: &OpenedInput) -> Result<()> {
+    fn print_header(
+        &mut self,
+        handle: &mut dyn Write,
+        input: &OpenedInput,
+        add_header_padding: bool,
+    ) -> Result<()> {
         if !self.config.style_components.header() {
             if Some(ContentType::BINARY) == self.content_type && !self.config.show_nonprintable {
                 writeln!(
@@ -232,6 +247,8 @@ impl<'a> Printer for InteractivePrinter<'a> {
                 )?;
             } else if self.config.style_components.grid() {
                 self.print_horizontal_line(handle, '┬')?;
+            } else if add_header_padding {
+                writeln!(handle)?;
             }
             return Ok(());
         }
@@ -248,6 +265,9 @@ impl<'a> Printer for InteractivePrinter<'a> {
                     .paint(if self.panel_width > 0 { "│ " } else { "" }),
             )?;
         } else {
+            if add_header_padding {
+                writeln!(handle)?;
+            }
             write!(handle, "{}", " ".repeat(self.panel_width))?;
         }
 

tests/integration_tests.rs

@@ -611,7 +611,7 @@ fn filename_multiple_ok() {
         .arg("--file-name=bar")
         .assert()
         .success()
-        .stdout("File: foo\nFile: bar\n")
+        .stdout("File: foo\n\nFile: bar\n")
         .stderr("");
 }
 
@@ -628,6 +628,18 @@ fn filename_multiple_err() {
         .failure();
 }
 
+#[test]
+fn header_padding() {
+    bat()
+        .arg("--decorations=always")
+        .arg("--style=plain")
+        .arg("test.txt")
+        .arg("single-line.txt")
+        .assert()
+        .stdout("hello world\n\nSingle Line\n")
+        .stderr("");
+}
+
 #[cfg(target_os = "linux")]
 #[test]
 fn file_with_invalid_utf8_filename() {