Add --no-ignore-parent flag

- Flag toggles parent checking in the `ignore` crate.  This should
  affect both git and non-git ignore files.
- Updated Changelog.

CHANGELOG.md

@@ -2,6 +2,8 @@
 
 ## Features
 
+- Add new `--no-ignore-parent` flag, see #787 (@will459)
+
 ## Bugfixes
 
 - Set default path separator to `/` in MSYS, see #537 and #730 (@aswild)

src/app.rs

@@ -49,6 +49,16 @@ pub fn build_app() -> App<'static, 'static> {
                          ignored by '.gitignore' files.",
                 ),
         )
+        .arg(
+            Arg::with_name("no-ignore-parent")
+                .long("no-ignore-parent")
+                .overrides_with("no-ignore-parent")
+                .hidden_short_help(true)
+                .long_help(
+                    "Show search results from files and directories that would otherwise be \
+                        ignored by '.gitignore', '.ignore', or '.fdignore' files in parent directories.",
+                ),
+        )
         .arg(
             Arg::with_name("no-global-ignore-file")
                 .long("no-global-ignore-file")

src/main.rs

@@ -338,6 +338,10 @@ fn run() -> Result<ExitCode> {
         read_vcsignore: !(matches.is_present("no-ignore")
             || matches.is_present("rg-alias-hidden-ignore")
             || matches.is_present("no-ignore-vcs")),
+        read_parent_ignore: !(matches.is_present("no-ignore")
+            || matches.is_present("rg-alias-hidden-ignore")
+            || matches.is_present("no-ignore-vcs")
+            || matches.is_present("no-ignore-parent")),
         read_global_ignore: !(matches.is_present("no-ignore")
             || matches.is_present("rg-alias-hidden-ignore")
             || matches.is_present("no-global-ignore-file")),

src/options.rs

@@ -24,6 +24,9 @@ pub struct Options {
     /// Whether to respect `.fdignore` files or not.
     pub read_fdignore: bool,
 
+    /// Whether to respect ignore files in parent directories or not.
+    pub read_parent_ignore: bool,
+
     /// Whether to respect VCS ignore files (`.gitignore`, ..) or not.
     pub read_vcsignore: bool,
 

src/walk.rs

@@ -68,7 +68,7 @@ pub fn scan(path_vec: &[PathBuf], pattern: Arc<Regex>, config: Arc<Options>) ->
     walker
         .hidden(config.ignore_hidden)
         .ignore(config.read_fdignore)
-        .parents(config.read_fdignore || config.read_vcsignore)
+        .parents(config.read_parent_ignore)
         .git_ignore(config.read_vcsignore)
         .git_global(config.read_vcsignore)
         .git_exclude(config.read_vcsignore)