Merge pull request #2430 from Enselic/blessable-help

Require changes to `-h` and `--help` to be blessed

Cargo.lock

@@ -89,6 +89,7 @@ dependencies = [
  "content_inspector",
  "dirs-next",
  "encoding",
+ "expect-test",
  "flate2",
  "git2",
  "globset",
@@ -286,6 +287,12 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "dissimilar"
+version = "1.0.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bd5f0c7e4bd266b8ab2550e6238d2e74977c23c15536ac7be45e9c95e2e3fbbb"
+
 [[package]]
 name = "doc-comment"
 version = "0.3.3"
@@ -389,6 +396,16 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "expect-test"
+version = "1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1d4661aca38d826eb7c72fe128e4238220616de4c0cc00db7bfc38e2e1364dd3"
+dependencies = [
+ "dissimilar",
+ "once_cell",
+]
+
 [[package]]
 name = "fancy-regex"
 version = "0.7.1"