Enable non-printable chars for redirected output (#1061)

CHANGELOG.md

@@ -5,6 +5,9 @@
 - Added support for the `NO_COLOR` environment variable, see #1021 and #1031 (@eth-p)
 
 ## Bugfixes
+
+- Fixed non-printable characters display for redirected output, see #1061 (@gsomix)
+
 ## Other
 ## Syntaxes
 

src/controller.rs

@@ -113,7 +113,7 @@ impl<'b> Controller<'b> {
                     };
 
                     let mut printer: Box<dyn Printer> = if self.config.loop_through {
-                        Box::new(SimplePrinter::new())
+                        Box::new(SimplePrinter::new(&self.config))
                     } else {
                         Box::new(InteractivePrinter::new(
                             &self.config,

src/printer.rs

@@ -52,15 +52,17 @@ pub(crate) trait Printer {
     ) -> Result<()>;
 }
 
-pub struct SimplePrinter;
+pub struct SimplePrinter<'a> {
+    config: &'a Config<'a>
+}
 
-impl SimplePrinter {
-    pub fn new() -> Self {
-        SimplePrinter {}
+impl<'a> SimplePrinter<'a> {
+    pub fn new(config: &'a Config) -> Self {
+        SimplePrinter { config }
     }
 }
 
-impl Printer for SimplePrinter {
+impl<'a> Printer for SimplePrinter<'a> {
     fn print_header(
         &mut self,
         _handle: &mut dyn Write,
@@ -86,7 +88,15 @@ impl Printer for SimplePrinter {
         line_buffer: &[u8],
     ) -> Result<()> {
         if !out_of_range {
-            handle.write_all(line_buffer)?;
+            if self.config.show_nonprintable {
+                let line = replace_nonprintable(line_buffer, self.config.tab_width);
+                write!(handle, "{}", line)?;
+                if line_buffer.last() == Some(&b'\n') {
+                    writeln!(handle)?;
+                }
+            } else {
+                handle.write_all(line_buffer)?
+            };
         }
         Ok(())
     }

tests/integration_tests.rs

@@ -716,3 +716,13 @@ fn do_not_detect_different_syntax_for_stdin_and_files() {
         from_utf8(&cmd_for_stdin.get_output().stdout).expect("output is valid utf-8")
     );
 }
+
+#[test]
+fn show_all_mode() {
+    bat()
+        .arg("--show-all")
+        .arg("nonprintable.txt")
+        .assert()
+        .stdout("hello•world␊\n├──┤␍␀␇␈␛")
+        .stderr("");
+}