Add DTD language support (#6644)

- Added syntax highlighting for the DTD subset of the XML spec.
- Included .dtd and .ent as common file extensions

1 files changed, 20 insertions, 0 deletions

diff --git a/languages.toml b/languages.toml
index 86688137..c497e296 100644
--- a/languages.toml
+++ b/languages.toml
@@ -2099,6 +2099,26 @@ roots = []
 name = "xml"
 source = { git = "https://github.com/RenjiSann/tree-sitter-xml", rev = "48a7c2b6fb9d515577e115e6788937e837815651" }
 
+
+[[language]]
+name = "dtd"
+scope = "source.dtd"
+injection-regex = "dtd"
+file-types = ["dtd", "ent"]
+indent = {tab-width = 2, unit = "  "}
+roots = []
+
+[language.auto-pairs]
+'(' = ')'
+'[' = ']'
+'"' = '"'
+"'" = "'"
+'<' = '>'
+
+[[grammar]]
+name = "dtd"
+source = { git = "https://github.com/KMikeeU/tree-sitter-dtd", rev = "6116becb02a6b8e9588ef73d300a9ba4622e156f"}
+
 [[language]]
 name = "wit"
 scope = "source.wit"