printer: tweak binary detection message format

This roughly matches similar changes made in GNU grep recently.

CHANGELOG.md

@@ -2,6 +2,19 @@ TBD
 ===
 Unreleased changes. Release notes have not yet been written.
 
+In this release, a small tweak has been made to the output format when a binary
+file is detected. Previously, it looked like this:
+
+```
+Binary file FOO matches (found "\0" byte around offset XXX)
+```
+
+Now it looks like this:
+
+```
+FOO: binary file matches (found "\0" byte around offset XXX)
+```
+
 Bug fixes:
 
 * [BUG #1277](https://github.com/BurntSushi/ripgrep/issues/1277):

crates/printer/src/standard.rs

@@ -1358,25 +1358,24 @@ impl<'a, M: Matcher, W: WriteColor> StandardImpl<'a, M, W> {
 
         let bin = self.searcher.binary_detection();
         if let Some(byte) = bin.quit_byte() {
-            self.write(b"WARNING: stopped searching binary file ")?;
             if let Some(path) = self.path() {
                 self.write_spec(self.config().colors.path(), path.as_bytes())?;
-                self.write(b" ")?;
+                self.write(b": ")?;
             }
             let remainder = format!(
-                "after match (found {:?} byte around offset {})\n",
+                "WARNING: stopped searching binary file after match \
+                 (found {:?} byte around offset {})\n",
                 [byte].as_bstr(),
                 offset,
             );
             self.write(remainder.as_bytes())?;
         } else if let Some(byte) = bin.convert_byte() {
-            self.write(b"Binary file ")?;
             if let Some(path) = self.path() {
                 self.write_spec(self.config().colors.path(), path.as_bytes())?;
-                self.write(b" ")?;
+                self.write(b": ")?;
             }
             let remainder = format!(
-                "matches (found {:?} byte around offset {})\n",
+                "binary file matches (found {:?} byte around offset {})\n",
                 [byte].as_bstr(),
                 offset,
             );

tests/binary.rs

@@ -40,7 +40,7 @@ rgtest!(after_match1_implicit, |dir: Dir, mut cmd: TestCommand| {
 
     let expected = "\
 hay:1:The Project Gutenberg EBook of A Study In Scarlet, by Arthur Conan Doyle
-WARNING: stopped searching binary file hay after match (found \"\\0\" byte around offset 9741)
+hay: WARNING: stopped searching binary file after match (found \"\\0\" byte around offset 9741)
 ";
     eqnice!(expected, cmd.stdout());
 });
@@ -53,7 +53,7 @@ rgtest!(after_match1_explicit, |dir: Dir, mut cmd: TestCommand| {
 
     let expected = "\
 1:The Project Gutenberg EBook of A Study In Scarlet, by Arthur Conan Doyle
-Binary file matches (found \"\\0\" byte around offset 9741)
+binary file matches (found \"\\0\" byte around offset 9741)
 ";
     eqnice!(expected, cmd.stdout());
 });
@@ -64,7 +64,7 @@ rgtest!(after_match1_stdin, |_: Dir, mut cmd: TestCommand| {
 
     let expected = "\
 1:The Project Gutenberg EBook of A Study In Scarlet, by Arthur Conan Doyle
-Binary file matches (found \"\\0\" byte around offset 9741)
+binary file matches (found \"\\0\" byte around offset 9741)
 ";
     eqnice!(expected, cmd.pipe(HAY));
 });
@@ -85,7 +85,7 @@ rgtest!(after_match1_implicit_binary, |dir: Dir, mut cmd: TestCommand| {
 
     let expected = "\
 hay:1:The Project Gutenberg EBook of A Study In Scarlet, by Arthur Conan Doyle
-Binary file hay matches (found \"\\0\" byte around offset 9741)
+hay: binary file matches (found \"\\0\" byte around offset 9741)
 ";
     eqnice!(expected, cmd.stdout());
 });
@@ -200,7 +200,7 @@ rgtest!(after_match2_implicit, |dir: Dir, mut cmd: TestCommand| {
 
     let expected = "\
 hay:1:The Project Gutenberg EBook of A Study In Scarlet, by Arthur Conan Doyle
-WARNING: stopped searching binary file hay after match (found \"\\0\" byte around offset 9741)
+hay: WARNING: stopped searching binary file after match (found \"\\0\" byte around offset 9741)
 ";
     eqnice!(expected, cmd.stdout());
 });
@@ -240,7 +240,7 @@ rgtest!(before_match1_explicit, |dir: Dir, mut cmd: TestCommand| {
     cmd.args(&["--no-mmap", "-n", "Heaven", "hay"]);
 
     let expected = "\
-Binary file matches (found \"\\0\" byte around offset 9741)
+binary file matches (found \"\\0\" byte around offset 9741)
 ";
     eqnice!(expected, cmd.stdout());
 });
@@ -253,7 +253,7 @@ rgtest!(before_match1_implicit_binary, |dir: Dir, mut cmd: TestCommand| {
     cmd.args(&["--no-mmap", "-n", "--binary", "Heaven", "-g", "hay"]);
 
     let expected = "\
-Binary file hay matches (found \"\\0\" byte around offset 9741)
+hay: binary file matches (found \"\\0\" byte around offset 9741)
 ";
     eqnice!(expected, cmd.stdout());
 });
@@ -288,7 +288,7 @@ rgtest!(before_match2_explicit, |dir: Dir, mut cmd: TestCommand| {
     cmd.args(&["--no-mmap", "-n", "a medical student", "hay"]);
 
     let expected = "\
-Binary file matches (found \"\\0\" byte around offset 9741)
+binary file matches (found \"\\0\" byte around offset 9741)
 ";
     eqnice!(expected, cmd.stdout());
 });

tests/misc.rs

@@ -788,7 +788,7 @@ rgtest!(unrestricted3, |dir: Dir, mut cmd: TestCommand| {
     cmd.arg("-uuu").arg("foo");
 
     let expected = "\
-Binary file hay matches (found \"\\0\" byte around offset 3)
+hay: binary file matches (found \"\\0\" byte around offset 3)
 ";
     eqnice!(expected, cmd.stdout());
 });
@@ -1001,7 +1001,7 @@ rgtest!(binary_convert, |dir: Dir, mut cmd: TestCommand| {
     cmd.arg("--no-mmap").arg("foo").arg("file");
 
     let expected = "\
-Binary file matches (found \"\\0\" byte around offset 3)
+binary file matches (found \"\\0\" byte around offset 3)
 ";
     eqnice!(expected, cmd.stdout());
 });
@@ -1011,7 +1011,7 @@ rgtest!(binary_convert_mmap, |dir: Dir, mut cmd: TestCommand| {
     cmd.arg("--mmap").arg("foo").arg("file");
 
     let expected = "\
-Binary file matches (found \"\\0\" byte around offset 3)
+binary file matches (found \"\\0\" byte around offset 3)
 ";
     eqnice!(expected, cmd.stdout());
 });