Add --no-ignore-vcs flag.

This flag will respect .ignore but not .gitignore.

Closes #68.

doc/rg.1

@@ -227,6 +227,12 @@ Don\[aq]t respect ignore files in parent directories.
 .RS
 .RE
 .TP
+.B \-\-no\-ignore\-vcs
+Don\[aq]t respect version control ignore files (e.g., .gitignore).
+Note that .ignore files will continue to be respected.
+.RS
+.RE
+.TP
 .B \-p, \-\-pretty
 Alias for \-\-color=always \-\-heading \-n.
 .RS

doc/rg.1.md

@@ -147,6 +147,10 @@ the raw speed of grep.
 --no-ignore-parent
 : Don't respect ignore files in parent directories.
 
+--no-ignore-vcs
+: Don't respect version control ignore files (e.g., .gitignore).
+  Note that .ignore files will continue to be respected.
+
 -p, --pretty
 : Alias for --color=always --heading -n.
 

src/args.rs

@@ -147,6 +147,10 @@ Less common options:
     --no-ignore-parent
         Don't respect ignore files in parent directories.
 
+    --no-ignore-vcs
+        Don't respect version control ignore files (e.g., .gitignore).
+        Note that .ignore files will continue to be respected.
+
     -p, --pretty
         Alias for --color=always --heading -n.
 
@@ -205,6 +209,7 @@ pub struct RawArgs {
     flag_no_heading: bool,
     flag_no_ignore: bool,
     flag_no_ignore_parent: bool,
+    flag_no_ignore_vcs: bool,
     flag_no_line_number: bool,
     flag_no_mmap: bool,
     flag_no_filename: bool,
@@ -250,6 +255,7 @@ pub struct Args {
     mmap: bool,
     no_ignore: bool,
     no_ignore_parent: bool,
+    no_ignore_vcs: bool,
     quiet: bool,
     replace: Option<Vec<u8>>,
     text: bool,
@@ -374,6 +380,9 @@ impl RawArgs {
             no_ignore_parent:
                 // --no-ignore implies --no-ignore-parent
                 self.flag_no_ignore_parent || no_ignore,
+            no_ignore_vcs:
+                // --no-ignore implies --no-ignore-vcs
+                self.flag_no_ignore_vcs || no_ignore,
             quiet: self.flag_quiet,
             replace: self.flag_replace.clone().map(|s| s.into_bytes()),
             text: text,
@@ -639,6 +648,7 @@ impl Args {
         let mut ig = Ignore::new();
         ig.ignore_hidden(!self.hidden);
         ig.no_ignore(self.no_ignore);
+        ig.no_ignore_vcs(self.no_ignore_vcs);
         ig.add_types(self.types.clone());
         if !self.no_ignore_parent {
             try!(ig.push_parents(path));

src/ignore.rs

@@ -89,9 +89,11 @@ pub struct Ignore {
     types: Types,
     /// Whether to ignore hidden files or not.
     ignore_hidden: bool,
-    /// When true, don't look at .gitignore or .agignore files for ignore
+    /// When true, don't look at .gitignore or .ignore files for ignore
     /// rules.
     no_ignore: bool,
+    /// When true, don't look at .gitignore files for ignore rules.
+    no_ignore_vcs: bool,
 }
 
 impl Ignore {
@@ -104,6 +106,7 @@ impl Ignore {
             types: Types::empty(),
             ignore_hidden: true,
             no_ignore: false,
+            no_ignore_vcs: true,
         }
     }
 
@@ -119,6 +122,12 @@ impl Ignore {
         self
     }
 
+    /// When set, VCS ignore files are ignored.
+    pub fn no_ignore_vcs(&mut self, yes: bool) -> &mut Ignore {
+        self.no_ignore_vcs = yes;
+        self
+    }
+
     /// Add a set of globs that overrides all other match logic.
     pub fn add_override(&mut self, gi: Gitignore) -> &mut Ignore {
         self.overrides = Overrides::new(Some(gi));
@@ -143,6 +152,9 @@ impl Ignore {
         let mut path = &*path;
         let mut saw_git = path.join(".git").is_dir();
         let mut ignore_names = IGNORE_NAMES.to_vec();
+        if self.no_ignore_vcs {
+            ignore_names.retain(|&name| name != ".gitignore");
+        }
         let mut ignore_dir_results = vec![];
         while let Some(parent) = path.parent() {
             if self.no_ignore {
@@ -173,9 +185,12 @@ impl Ignore {
     pub fn push<P: AsRef<Path>>(&mut self, path: P) -> Result<(), Error> {
         if self.no_ignore {
             self.stack.push(IgnoreDir::empty(path));
-            return Ok(());
+            Ok(())
+        } else if self.no_ignore_vcs {
+            self.push_ignore_dir(IgnoreDir::without_vcs(path))
+        } else {
+            self.push_ignore_dir(IgnoreDir::new(path))
         }
-        self.push_ignore_dir(IgnoreDir::new(path))
     }
 
     /// Pushes the result of building a directory matcher on to the stack.
@@ -305,13 +320,18 @@ pub struct IgnoreDir {
 
 impl IgnoreDir {
     /// Create a new matcher for the given directory.
-    ///
-    /// If no ignore glob patterns could be found in the directory then `None`
-    /// is returned.
     pub fn new<P: AsRef<Path>>(path: P) -> Result<IgnoreDir, Error> {
         IgnoreDir::with_ignore_names(path, IGNORE_NAMES.iter())
     }
 
+    /// Create a new matcher for the given directory.
+    ///
+    /// Don't respect VCS ignore files.
+    pub fn without_vcs<P: AsRef<Path>>(path: P) -> Result<IgnoreDir, Error> {
+        let names = IGNORE_NAMES.iter().filter(|name| **name != ".gitignore");
+        IgnoreDir::with_ignore_names(path, names)
+    }
+
     /// Create a new IgnoreDir that never matches anything with the given path.
     pub fn empty<P: AsRef<Path>>(path: P) -> IgnoreDir {
         IgnoreDir {

tests/tests.rs

@@ -687,6 +687,18 @@ be, to a very large extent, the result of luck. Sherlock Holmes
     assert_eq!(lines, expected);
 });
 
+// See: https://github.com/BurntSushi/ripgrep/issues/68
+clean!(feature_68, "test", ".", |wd: WorkDir, mut cmd: Command| {
+    wd.create(".gitignore", "foo");
+    wd.create(".ignore", "bar");
+    wd.create("foo", "test");
+    wd.create("bar", "test");
+    cmd.arg("--no-ignore-vcs");
+
+    let lines: String = wd.stdout(&mut cmd);
+    assert_eq!(lines, "foo:test\n");
+});
+
 #[test]
 fn binary_nosearch() {
     let wd = WorkDir::new("binary_nosearch");