From fab34da3e7899ca7f38ad4a9e4ce498d96f99c5b Mon Sep 17 00:00:00 2001
From: Aaron Puchert <aaronpuchert@alice-dsl.net>
Date: Fri, 18 Jan 2013 18:09:21 +0100
Subject: [PATCH 1/4] Added PostScript to languages.yml and a sample file.

---
 lib/linguist/languages.yml       |  6 +++++
 samples/PostScript/sierpinski.ps | 41 ++++++++++++++++++++++++++++++++
 2 files changed, 47 insertions(+)
 create mode 100644 samples/PostScript/sierpinski.ps

diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index c61ebd72..9e4f745c 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -1003,6 +1003,12 @@ PogoScript:
   lexer: Text only
   primary_extension: .pogo
 
+PostScript:
+  type: programming
+  primary_extension: .ps
+  extensions:
+  - .eps
+
 PowerShell:
   type: programming
   ace_mode: powershell
diff --git a/samples/PostScript/sierpinski.ps b/samples/PostScript/sierpinski.ps
new file mode 100644
index 00000000..e3c9f665
--- /dev/null
+++ b/samples/PostScript/sierpinski.ps
@@ -0,0 +1,41 @@
+%!PS-Adobe-3.0
+%%Creator: Aaron Puchert
+%%Title: The Sierpinski triangle
+%%Pages: 1
+%%PageOrder: Ascend
+
+%%BeginProlog
+% PAGE SETTINGS
+/pageset {
+  28.3464566 28.3464566 scale    % set cm = 1
+  0.5 0.5 translate
+  0 setlinewidth
+} def
+
+% sierpinski(n) draws a sierpinski triangle of order n
+/sierpinski {
+dup 0 gt {
+  [0.5 0 0 0.5 0 0] concat dup 1 sub sierpinski
+  [1 0 0 1 1 0] concat dup 1 sub sierpinski
+  [1 0 0 1 -1 1] concat dup 1 sub sierpinski
+  [2 0 0 2 0 -1] concat
+} {
+  newpath
+    0 0 moveto
+    1 0 lineto
+    0 1 lineto
+  closepath
+  fill
+} ifelse pop} def
+%%EndProlog
+
+%%BeginSetup
+<< /PageSize [596 843] >> setpagedevice  % A4
+%%EndSetup
+
+%%Page: Test 1
+pageset
+[20 0 10 300 sqrt 0 0] concat
+9 sierpinski
+showpage
+%%EOF

From 0436973fb766ed46893180eb26e1a8e797c14f68 Mon Sep 17 00:00:00 2001
From: Aaron Puchert <aaronpuchert@alice-dsl.net>
Date: Sun, 2 Jun 2013 18:00:06 +0200
Subject: [PATCH 2/4] Add detection for generated PostScript files.

---
 lib/linguist/generated.rb | 24 ++++++++++++++++++++++++
 test/test_blob.rb         |  3 +++
 2 files changed, 27 insertions(+)

diff --git a/lib/linguist/generated.rb b/lib/linguist/generated.rb
index 826fdc93..41937ff3 100644
--- a/lib/linguist/generated.rb
+++ b/lib/linguist/generated.rb
@@ -57,6 +57,7 @@ module Linguist
         xcode_project_file? ||
         generated_net_docfile? ||
         generated_parser? ||
+        generated_postscript? ||
         generated_protocol_buffer?
     end
 
@@ -160,6 +161,29 @@ module Linguist
       false
     end
 
+    # Internal: Is the blob of PostScript generated?
+    #
+    # PostScript files are often generated by other programs. If they tell us so,
+    # we can detect them.
+    #
+    # Returns true or false.
+    def generated_postscript?
+      return false unless ['.ps', '.eps'].include? extname
+
+      # We analyze the "%%Creator:" comment, which contains the author/generator
+      # of the file. If there is one, it should be in one of the first few lines.
+      creator = lines[0..9].find {|line| line =~ /^%%Creator: /}
+      return false if creator.nil?
+
+      # Most generators write their version number, while human authors' or companies'
+      # names don't contain numbers. So look if the line contains digits. Also
+      # look for some special cases without version numbers.
+      return creator =~ /[0-9]/ ||
+        creator.include? "mpage" ||
+        creator.include? "draw" ||
+        creator.include? "ImageMagick"
+    end
+
     # Internal: Is the blob a C++, Java or Python source file generated by the
     # Protocol Buffer compiler?
     #
diff --git a/test/test_blob.rb b/test/test_blob.rb
index a5efbb6f..5df3c53c 100644
--- a/test/test_blob.rb
+++ b/test/test_blob.rb
@@ -188,6 +188,9 @@ class TestBlob < Test::Unit::TestCase
     # PEG.js-generated parsers
     assert blob("JavaScript/parser.js").generated?
 
+    # Generated PostScript
+    assert !blob("PostScript/sierpinski.ps").generated?
+
     # These examples are too basic to tell
     assert !blob("JavaScript/empty.js").generated?
     assert !blob("JavaScript/hello.js").generated?

From 53f29344f81193ed26221975fdfe363d706466f6 Mon Sep 17 00:00:00 2001
From: Aaron Puchert <aaronpuchert@alice-dsl.net>
Date: Thu, 14 Nov 2013 00:56:53 +0100
Subject: [PATCH 3/4] Changed PostScript type to 'markup'

---
 lib/linguist/languages.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index 9e4f745c..0f0b1772 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -1004,7 +1004,7 @@ PogoScript:
   primary_extension: .pogo
 
 PostScript:
-  type: programming
+  type: markup
   primary_extension: .ps
   extensions:
   - .eps

From 86329a075864744443d5335c68d98b23656a2e99 Mon Sep 17 00:00:00 2001
From: Aaron Puchert <aaronpuchert@alice-dsl.net>
Date: Tue, 3 Dec 2013 17:21:43 +0100
Subject: [PATCH 4/4] Forgot parantheses

---
 lib/linguist/generated.rb | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/lib/linguist/generated.rb b/lib/linguist/generated.rb
index 41937ff3..93931f06 100644
--- a/lib/linguist/generated.rb
+++ b/lib/linguist/generated.rb
@@ -179,9 +179,9 @@ module Linguist
       # names don't contain numbers. So look if the line contains digits. Also
       # look for some special cases without version numbers.
       return creator =~ /[0-9]/ ||
-        creator.include? "mpage" ||
-        creator.include? "draw" ||
-        creator.include? "ImageMagick"
+        creator.include?("mpage") ||
+        creator.include?("draw") ||
+        creator.include?("ImageMagick")
     end
 
     # Internal: Is the blob a C++, Java or Python source file generated by the