Add raise as keyword

Closes #519

Signed-off-by: Sgiath <[email protected]>

Author: Sgiath

spec/syntax/keyword_spec.rb

@@ -14,4 +14,16 @@
     case true do
     EOF
   end
+
+  it 'raise used as keyword with string' do
+    expect(<<~EOF).to include_elixir_syntax('elixirKeyword', 'raise')
+    raise "oops"
+    EOF
+  end
+
+  it 'raise used as keyword with module' do
+    expect(<<~EOF).to include_elixir_syntax('elixirKeyword', 'raise')
+    raise ArgumentError, message: "invalid argument foo"
+    EOF
+  end
 end

syntax/elixir.vim

@@ -18,7 +18,7 @@ syn keyword elixirTodo FIXME NOTE TODO OPTIMIZE XXX HACK contained
 
 syn match elixirId '\<[_a-zA-Z]\w*[!?]\?\>' contains=elixirUnusedVariable
 
-syn match elixirKeyword '\(\.\)\@<!\<\(for\|case\|when\|with\|cond\|if\|unless\|try\|receive\|after\|rescue\|catch\|else\|quote\|unquote\|super\|unquote_splicing\)\>:\@!'
+syn match elixirKeyword '\(\.\)\@<!\<\(for\|case\|when\|with\|cond\|if\|unless\|try\|receive\|after\|raise\|rescue\|catch\|else\|quote\|unquote\|super\|unquote_splicing\)\>:\@!'
 
 syn keyword elixirInclude import require alias use