cli: add --no-require-git flag

This flag prevents ripgrep from requiring one to search a git repository
in order to respect git-related ignore rules (global, .gitignore and
local excludes). This actually corresponds to behavior ripgrep had long
ago, but #934 changed that. It turns out that users were relying on this
buggy behavior. In most cases, fixing it as simple as converting one's
rules to .ignore or .rgignore files. Unfortunately, there are other use
cases---like Perforce automatically respecting .gitignore files---that
make a strong case for ripgrep to at least support this.

The UX of a flag like this is absolutely atrocious. It's so obscure that
it's really not worth explicitly calling it out anywhere. Moreover, the
error cases that occur when this flag isn't used (but its behavior is
desirable) will not be intuitive, do not seem easily detectable and will
not guide users to this flag. Nevertheless, the motivation for this is
just barely strong enough for me to begrudgingly accept this.

Fixes #1414, Closes #1416

1 files changed, 28 insertions, 0 deletions

diff --git a/tests/feature.rs b/tests/feature.rs
index 33ab4e17..3d61f459 100644
--- a/tests/feature.rs
+++ b/tests/feature.rs
@@ -728,6 +728,34 @@ rgtest!(f1207_ignore_encoding, |dir: Dir, mut cmd: TestCommand| {
     eqnice!("\u{FFFD}\u{FFFD}\x00b\n", cmd.stdout());
 });
 
+// See: https://github.com/BurntSushi/ripgrep/issues/1414
+rgtest!(f1414_no_require_git, |dir: Dir, mut cmd: TestCommand| {
+    dir.create(".gitignore", "foo");
+    dir.create("foo", "");
+    dir.create("bar", "");
+
+    let stdout = cmd.args(&[
+        "--sort", "path",
+        "--files",
+    ]).stdout();
+    eqnice!("bar\nfoo\n", stdout);
+
+    let stdout = cmd.args(&[
+        "--sort", "path",
+        "--files",
+        "--no-require-git",
+    ]).stdout();
+    eqnice!("bar\n", stdout);
+
+    let stdout = cmd.args(&[
+        "--sort", "path",
+        "--files",
+        "--no-require-git",
+        "--require-git",
+    ]).stdout();
+    eqnice!("bar\nfoo\n", stdout);
+});
+
 // See: https://github.com/BurntSushi/ripgrep/pull/1420
 rgtest!(f1420_no_ignore_dot, |dir: Dir, mut cmd: TestCommand| {
     dir.create_dir(".git/info");