From 20ccd441f2d6000100bbbbade37aeca492d55ee0 Mon Sep 17 00:00:00 2001
From: Tom Jackson <tjackson@fb.com>
Date: Mon, 26 Sep 2016 09:34:32 -0700
Subject: [PATCH 1/2] Allow (and ignore) whitespace-only lines in .gitignore
 files

Git considers these to be blank lines.
---
 src/gitignore.rs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/gitignore.rs b/src/gitignore.rs
index e05dc58..c4f46fa 100644
--- a/src/gitignore.rs
+++ b/src/gitignore.rs
@@ -283,12 +283,15 @@ impl GitignoreBuilder {
         from: P,
         mut line: &str,
     ) -> Result<(), Error> {
-        if line.is_empty() || line.starts_with("#") {
+        if line.starts_with("#") {
             return Ok(());
         }
         if !line.ends_with("\\ ") {
             line = line.trim_right();
         }
+        if line.is_empty() {
+            return Ok(());
+        }
         let mut pat = Pattern {
             from: from.as_ref().to_path_buf(),
             original: line.to_string(),

From f27aa3ff6fcff9adfa312d8d404254419f90c029 Mon Sep 17 00:00:00 2001
From: Andrew Gallant <jamslam@gmail.com>
Date: Mon, 26 Sep 2016 18:55:26 -0400
Subject: [PATCH 2/2] Add regression test.

Fixes #106.
---
 src/gitignore.rs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/gitignore.rs b/src/gitignore.rs
index c4f46fa..bfc8384 100644
--- a/src/gitignore.rs
+++ b/src/gitignore.rs
@@ -429,4 +429,10 @@ mod tests {
     not_ignored!(ignot11, ROOT, "#foo", "#foo");
     not_ignored!(ignot12, ROOT, "\n\n\n", "foo");
     not_ignored!(ignot13, ROOT, "foo/**", "foo", true);
+
+    // See: https://github.com/BurntSushi/ripgrep/issues/106
+    #[test]
+    fn regression_106() {
+        Gitignore::from_str("/", " ").unwrap();
+    }
 }