From 7346399b7d1ac5d91b0c2a1095e0816799db08b1 Mon Sep 17 00:00:00 2001
From: bootleq <bootleq@gmail.com>
Date: Mon, 28 Sep 2015 19:27:30 +0800
Subject: [PATCH] Add `__END__` foldable_groups option

---
 doc/ft-ruby-syntax.txt                        |  1 +
 .../generators/syntax/percent_generator.rb    | 19 +++++++++++++++++++
 etc/examples/syntax/percent/__END__.rb        | 13 +++++++++++++
 syntax/ruby.vim                               |  6 +++++-
 4 files changed, 38 insertions(+), 1 deletion(-)
 create mode 100644 etc/examples/syntax/percent/__END__.rb

diff --git a/doc/ft-ruby-syntax.txt b/doc/ft-ruby-syntax.txt
index e3706f61..46dc2695 100644
--- a/doc/ft-ruby-syntax.txt
+++ b/doc/ft-ruby-syntax.txt
@@ -71,6 +71,7 @@ value is space-separated keywords, known keywords were:
     :          Symbol
     #          Multiline comment
     <<         Here documents
+    __END__    Source code after "__END__" directive
 
 5. Reducing expensive operations		*ruby_no_expensive*
 
diff --git a/etc/examples/generators/syntax/percent_generator.rb b/etc/examples/generators/syntax/percent_generator.rb
index 669d7927..2833b203 100755
--- a/etc/examples/generators/syntax/percent_generator.rb
+++ b/etc/examples/generators/syntax/percent_generator.rb
@@ -589,6 +589,25 @@
 
 
 
+# __END__ {{{
+if arg == '__END__'
+  puts <<-EOF.gsub(/^ {4}/, '')
+      __END__
+      invalid
+      invalid
+
+
+    __END__
+      valid
+      valid
+
+
+  EOF
+end
+# }}}
+
+
+
 puts "#\svim:foldmethod=syntax"
 
 
diff --git a/etc/examples/syntax/percent/__END__.rb b/etc/examples/syntax/percent/__END__.rb
new file mode 100644
index 00000000..752a20cb
--- /dev/null
+++ b/etc/examples/syntax/percent/__END__.rb
@@ -0,0 +1,13 @@
+# Generated by `./etc/examples/generators/syntax/percent_generator.rb __END__ > etc/examples/syntax/percent/__END__.rb`
+
+  __END__
+  invalid
+  invalid
+
+
+__END__
+  valid
+  valid
+
+
+# vim:foldmethod=syntax
diff --git a/syntax/ruby.vim b/syntax/ruby.vim
index b4449fad..94dc7683 100644
--- a/syntax/ruby.vim
+++ b/syntax/ruby.vim
@@ -465,7 +465,11 @@ syn match  rubySymbol		"\%([{(,]\_s*\)\@<=[[:space:],{]\l\w*[!?]\=::\@!"hs=s+1,h
 syn match  rubySymbol		"[[:space:],{(]\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*[!?]\=:[[:space:],]\@="hs=s+1,he=e-1
 
 " __END__ Directive
-syn region rubyData matchgroup=rubyDataDirective start="^__END__$" end="\%$" fold
+if s:foldable('__END__')
+  syn region rubyData matchgroup=rubyDataDirective start="^__END__$" end="\%$" fold
+else
+  syn region rubyData matchgroup=rubyDataDirective start="^__END__$" end="\%$"
+endif
 
 hi def link rubyClass			rubyDefine
 hi def link rubyModule			rubyDefine