ripper: fix ripper.E

* ext/ripper/depend (ripper.E): add missing $(INCFLAGS).

* ext/ripper/tools/strip.rb: insert an empty line for blank or
  line directive lines.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54761 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 3 insertions, 4 deletions

diff --git a/ext/ripper/tools/strip.rb b/ext/ripper/tools/strip.rb
index 82022d0b55..0e409eb63b 100755
--- a/ext/ripper/tools/strip.rb
+++ b/ext/ripper/tools/strip.rb
@@ -1,11 +1,10 @@
 # frozen_string_literal: false
 last_is_void = false
 ARGF.each do |line|
-  if line.strip.empty?
-    #puts() unless last_is_void
+  case line
+  when /\A\s*\z/, /\A\#/
+    puts unless last_is_void
     last_is_void = true
-  elsif /\A\#/ === line
-    ;
   else
     print line
     last_is_void = false