Test all lexer values

lib/linguist/language.rb

@@ -154,7 +154,8 @@ module Linguist
       @aliases = [default_alias_name] + (attributes[:aliases] || [])
 
       # Lookup Lexer object
-      @lexer = Lexer.find_by_alias(attributes[:lexer] || default_alias_name)
+      @lexer = Lexer.find_by_alias(attributes[:lexer] || default_alias_name) ||
+        raise(ArgumentError, "#{@name} is missing lexer")
 
       # Set legacy search term
       @search_term = attributes[:search_term] || default_alias_name

lib/linguist/languages.yml

@@ -36,6 +36,7 @@ AppleScript:
   :ext:
   - .scpt
 Arc:
+  :lexer: text
   :ext:
   - .arc
 Assembly:
@@ -156,6 +157,7 @@ Dylan:
   :ext:
   - .dylan
 Eiffel:
+  :lexer: text
   :ext:
   - .e
 Emacs Lisp:
@@ -235,6 +237,7 @@ HTML+PHP:
   :ext:
   - .phtml
 HaXe:
+  :lexer: hx
   :ext:
   - .hx
   - .hxml
@@ -308,6 +311,7 @@ Mako:
   :ext:
   - .mao
 Markdown:
+  :lexer: text
   :ext:
   - .md
   - .mkd
@@ -318,6 +322,7 @@ Matlab:
   :ext:
   - .matlab
 Max/MSP:
+  :lexer: text
   :ext:
   - .mxt
 Mirah:
@@ -378,7 +383,7 @@ PHP:
   - .php4
   - .php5
 Parrot Internal Representation:
-  :lexer: pir
+  :lexer: text
   :search_term: pir
   :aliases:
   - pir
@@ -397,6 +402,7 @@ Perl:
   - .perl
   - .psgi
 Pure Data:
+  :lexer: text
   :ext:
   - .pd
 Python:
@@ -415,6 +421,7 @@ R:
   - .r
   - .R
 Racket:
+  :lexer: text
   :ext:
   - .rkt
   - .rktl
@@ -469,6 +476,7 @@ Scheme:
   - .sps
   - .scm
 Self:
+  :lexer: text
   :ext:
   - .self
 Shell:
@@ -489,6 +497,7 @@ Smarty:
   :ext:
   - .tpl
 SuperCollider:
+  :lexer: text
   :ext:
   - .sc
 Tcl:
@@ -509,16 +518,19 @@ Text:
   :ext:
   - .txt
 Textile:
+  :lexer: text
   :ext:
   - .textile
 Vala:
   :ext:
   - .vala
 VHDL:
+  :lexer: text
   :ext:
   - .vhdl
   - .vhd
 Verilog:
+  :lexer: text
   :ext:
   - .v
 VimL:
@@ -530,6 +542,7 @@ VimL:
   - .vim
   - .vimrc
 Visual Basic:
+  :lexer: text
   :ext:
   - .bas
   - .vbs