Fix spelling of Perl 6 (#3672)

Resolves #3671.

lib/linguist/heuristics.rb

@@ -340,13 +340,13 @@ module Linguist
       elsif /use strict|use\s+v?5\./.match(data)
         Language["Perl"]
       elsif /^(use v6|(my )?class|module)/.match(data)
-        Language["Perl6"]
+        Language["Perl 6"]
       end
     end
 
     disambiguate ".pm" do |data|
       if /^\s*(?:use\s+v6\s*;|(?:\bmy\s+)?class|module)\b/.match(data)
-        Language["Perl6"]
+        Language["Perl 6"]
       elsif /\buse\s+(?:strict\b|v?5\.)/.match(data)
         Language["Perl"]
       end
@@ -446,7 +446,7 @@ module Linguist
       if /^\s*%[ \t]+|^\s*var\s+\w+\s*:=\s*\w+/.match(data)
         Language["Turing"]
       elsif /^\s*(?:use\s+v6\s*;|\bmodule\b|\b(?:my\s+)?class\b)/.match(data)
-        Language["Perl6"]
+        Language["Perl 6"]
       elsif /\buse\s+(?:strict\b|v?5\.)/.match(data)
         Language["Perl"]
       end

lib/linguist/languages.yml

@@ -3210,7 +3210,7 @@ Perl:
   interpreters:
   - perl
   language_id: 282
-Perl6:
+Perl 6:
   type: programming
   color: "#0000fb"
   extensions:

test/test_heuristics.rb

@@ -212,20 +212,20 @@ class TestHeuristcs < Minitest::Test
     })
   end
 
-  # Candidate languages = ["Perl", "Perl6", "Prolog"]
+  # Candidate languages = ["Perl", "Perl 6", "Prolog"]
   def test_pl_prolog_perl_by_heuristics
     assert_heuristics({
       "Prolog" => all_fixtures("Prolog", "*.pl"),
       "Perl" => ["Perl/oo1.pl", "Perl/oo2.pl", "Perl/oo3.pl", "Perl/fib.pl", "Perl/use5.pl"],
-      "Perl6" => all_fixtures("Perl6", "*.pl")
+      "Perl 6" => all_fixtures("Perl 6", "*.pl")
     })
   end
 
-  # Candidate languages = ["Perl", "Perl6"]
+  # Candidate languages = ["Perl", "Perl 6"]
   def test_pm_perl_by_heuristics
     assert_heuristics({
       "Perl" => all_fixtures("Perl", "*.pm"),
-      "Perl6" => all_fixtures("Perl6", "*.pm")
+      "Perl 6" => all_fixtures("Perl 6", "*.pm")
     })
   end
 
@@ -279,13 +279,13 @@ class TestHeuristcs < Minitest::Test
     })
   end
 
-  # Candidate languages = ["Perl", "Perl6"]
+  # Candidate languages = ["Perl", "Perl 6"]
   def test_t_perl_by_heuristics
     assert_heuristics({
       "Perl" => all_fixtures("Perl", "*.t"),
-      "Perl6" => ["Perl6/01-dash-uppercase-i.t", "Perl6/01-parse.t", "Perl6/advent2009-day16.t",
-                  "Perl6/basic-open.t", "Perl6/calendar.t", "Perl6/for.t", "Perl6/hash.t",
-                  "Perl6/listquote-whitespace.t"]
+      "Perl 6" => ["Perl 6/01-dash-uppercase-i.t", "Perl 6/01-parse.t", "Perl 6/advent2009-day16.t",
+                   "Perl 6/basic-open.t", "Perl 6/calendar.t", "Perl 6/for.t", "Perl 6/hash.t",
+                   "Perl 6/listquote-whitespace.t"]
     })
   end
 

vendor/README.md

@@ -255,7 +255,7 @@ This is a list of grammars that Linguist selects to provide syntax highlighting
 - **PAWN:** [Southclaw/pawn-sublime-language](https://github.com/Southclaw/pawn-sublime-language)
 - **Pep8:** [R4PaSs/Sublime-Pep8](https://github.com/R4PaSs/Sublime-Pep8)
 - **Perl:** [textmate/perl.tmbundle](https://github.com/textmate/perl.tmbundle)
-- **Perl6:** [perl6/atom-language-perl6](https://github.com/perl6/atom-language-perl6)
+- **Perl 6:** [perl6/atom-language-perl6](https://github.com/perl6/atom-language-perl6)
 - **PHP:** [textmate/php.tmbundle](https://github.com/textmate/php.tmbundle)
 - **Pic:** [Alhadis/language-roff](https://github.com/Alhadis/language-roff)
 - **PicoLisp:** [textmate/lisp.tmbundle](https://github.com/textmate/lisp.tmbundle)