Add an elixir-specific markdown language

Author: the-mikedavis

languages.toml

@@ -1998,3 +1998,12 @@ grammar = "qmljs"
 [[grammar]]
 name = "qmljs"
 source = { git = "https://github.com/yuja/tree-sitter-qmljs", rev = "0b2b25bcaa7d4925d5f0dda16f6a99c588a437f1" }
+
+[[language]]
+name = "elixir-markdown"
+scope = "text.markdown.elixir"
+injection-regex = "exmd|elixir-markdown"
+file-types = []
+roots = []
+indent = { tab-width = 2, unit = "  " }
+grammar = "markdown"

runtime/queries/elixir-markdown/highlights.scm

@@ -0,0 +1 @@
+; inherits: markdown

runtime/queries/elixir-markdown/injections.scm

@@ -0,0 +1,10 @@
+((indented_code_block) @injection.content
+ (#match? @injection.content "^\\s*iex")
+ (#set! injection.include-children)
+ (#set! injection.language "iex"))
+
+((indented_code_block) @injection.content
+ (#set! injection.include-children)
+ (#set! injection.language "elixir"))
+
+; inherits: markdown

runtime/queries/elixir/injections.scm

@@ -18,7 +18,7 @@
     (arguments [
       (string (quoted_content) @injection.content)
       (sigil (quoted_content) @injection.content)
-  ])) (#set! injection.language "markdown"))
+  ])) (#set! injection.language "elixir-markdown"))
 
 ; Zigler Sigils
 ((sigil