Update regex-syntax for bug fix.

The bug fix was in expression pretty printing. ripgrep parses the regex
into an AST and may do some modifications to it, which requires the
ability to go from string -> AST -> string' -> AST' where string == string'
implies AST == AST'.

Also, add a regression test for the specific regex that tripped the bug.

Fixes #156.

2 files changed, 32 insertions, 4 deletions

diff --git a/Cargo.lock b/Cargo.lock
index 6083716f..f1932c89 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -92,7 +92,7 @@ dependencies = [
  "memchr 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "memmap 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 0.1.77 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex-syntax 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex-syntax 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -161,7 +161,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "aho-corasick 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "memchr 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex-syntax 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex-syntax 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "simd 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "thread_local 0.2.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "utf8-ranges 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -169,7 +169,7 @@ dependencies = [
 
 [[package]]
 name = "regex-syntax"
-version = "0.3.5"
+version = "0.3.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -253,7 +253,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum num_cpus 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8890e6084723d57d0df8d2720b0d60c6ee67d6c93e7169630e4371e88765dcad"
 "checksum rand 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)" = "2791d88c6defac799c3f20d74f094ca33b9332612d9aef9078519c82e4fe04a5"
 "checksum regex 0.1.77 (registry+https://github.com/rust-lang/crates.io-index)" = "64b03446c466d35b42f2a8b203c8e03ed8b91c0f17b56e1f84f7210a257aa665"
-"checksum regex-syntax 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)" = "279401017ae31cf4e15344aa3f085d0e2e5c1e70067289ef906906fdbe92c8fd"
+"checksum regex-syntax 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)" = "48f0573bcee95a48da786f8823465b5f2a1fae288a55407aca991e5b3e0eae11"
 "checksum rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)" = "6159e4e6e559c81bd706afe9c8fd68f547d3e851ce12e76b1de7914bab61691b"
 "checksum simd 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "63b5847c2d766ca7ce7227672850955802fabd779ba616aeabead4c2c3877023"
 "checksum strsim 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "50c069df92e4b01425a8bf3576d5d417943a6a7272fbabaf5bd80b1aaa76442e"
diff --git a/tests/tests.rs b/tests/tests.rs
index 032bae00..d6fe35d2 100644
--- a/tests/tests.rs
+++ b/tests/tests.rs
@@ -809,6 +809,34 @@ sym2:be, to a very large extent, the result of luck. Sherlock Holmes
     assert_eq!(lines, path(expected));
 });
 
+// See: https://github.com/BurntSushi/ripgrep/issues/156
+clean!(
+    regression_156,
+    r#"#(?:parse|include)\s*\(\s*(?:"|')[./A-Za-z_-]+(?:"|')"#,
+    "testcase.txt",
+|wd: WorkDir, mut cmd: Command| {
+    const TESTCASE: &'static str = r#"#parse('widgets/foo_bar_macros.vm')
+#parse ( 'widgets/mobile/foo_bar_macros.vm' )
+#parse ("widgets/foobarhiddenformfields.vm")
+#parse ( "widgets/foo_bar_legal.vm" )
+#include( 'widgets/foo_bar_tips.vm' )
+#include('widgets/mobile/foo_bar_macros.vm')
+#include ("widgets/mobile/foo_bar_resetpw.vm")
+#parse('widgets/foo-bar-macros.vm')
+#parse ( 'widgets/mobile/foo-bar-macros.vm' )
+#parse ("widgets/foo-bar-hiddenformfields.vm")
+#parse ( "widgets/foo-bar-legal.vm" )
+#include( 'widgets/foo-bar-tips.vm' )
+#include('widgets/mobile/foo-bar-macros.vm')
+#include ("widgets/mobile/foo-bar-resetpw.vm")
+"#;
+    wd.create("testcase.txt", TESTCASE);
+    cmd.arg("-N");
+
+    let lines: String = wd.stdout(&mut cmd);
+    assert_eq!(lines, TESTCASE);
+});
+
 // See: https://github.com/BurntSushi/ripgrep/issues/20
 sherlock!(feature_20_no_filename, "Sherlock", ".",
 |wd: WorkDir, mut cmd: Command| {