ignore: fix handling of **

When deciding whether to add the `**/` prefix or not, we should choose
not to add it if the pattern is simply a bare `**`. Previously, we were
only not adding it if it was `**/`, which is correct, but we also need
to do it for `**` since `**` can already match anywhere.

There's likely a more principled solution to this, but this works for
now.

Fixes #1173

2 files changed, 10 insertions, 2 deletions

diff --git a/ignore/src/gitignore.rs b/ignore/src/gitignore.rs
index 1a44e626..48d1bb4b 100644
--- a/ignore/src/gitignore.rs
+++ b/ignore/src/gitignore.rs
@@ -69,8 +69,7 @@ impl Glob {
 
     /// Returns true if and only if this glob has a `**/` prefix.
     fn has_doublestar_prefix(&self) -> bool {
-        self.actual.starts_with("**/")
-        || (self.actual == "**" && self.is_only_dir)
+        self.actual.starts_with("**/") || self.actual == "**"
     }
 }
 
@@ -710,6 +709,7 @@ mod tests {
     ignored!(ig40, ROOT, "\\*", "*");
     ignored!(ig41, ROOT, "\\a", "a");
     ignored!(ig42, ROOT, "s*.rs", "sfoo.rs");
+    ignored!(ig43, ROOT, "**", "foo.rs");
 
     not_ignored!(ignot1, ROOT, "amonths", "months");
     not_ignored!(ignot2, ROOT, "monthsa", "months");
diff --git a/tests/regression.rs b/tests/regression.rs
index 8102fd90..e4da2f1c 100644
--- a/tests/regression.rs
+++ b/tests/regression.rs
@@ -596,3 +596,11 @@ rgtest!(r1164, |dir: Dir, mut cmd: TestCommand| {
         cmd.arg("--no-ignore-file-case-insensitive").stdout()
     );
 });
+
+// See: https://github.com/BurntSushi/ripgrep/issues/1173
+rgtest!(r1173, |dir: Dir, mut cmd: TestCommand| {
+    dir.create_dir(".git");
+    dir.create(".gitignore", "**");
+    dir.create("foo", "test");
+    cmd.arg("test").assert_err();
+});