Add tree-sitter-markdown, set up simple markdown higlighting

crates/zed/Cargo.toml

@@ -86,6 +86,7 @@ tiny_http = "0.8"
 toml = "0.5"
 tree-sitter = "0.20.0"
 tree-sitter-rust = "0.20.0"
+tree-sitter-markdown = { git = "https://github.com/maxbrunsfeld/tree-sitter-markdown", rev = "b2b4eefd51ada972ef8bb581b83b6b8e7a28c7a6" }
 url = "2.2"
 
 [dev-dependencies]

crates/zed/assets/themes/black.toml

@@ -50,3 +50,10 @@ comment = "#6a9955"
 property = "#4e94ce"
 variant = "#4fc1ff"
 constant = "#9cdcfe"
+
+title = { color = "#9cdcfe", weight = "bold" }
+emphasis = "#4ec9b0"
+"emphasis.strong" = { color = "#4ec9b0", weight = "bold" }
+link_uri = { color = "#6a9955", underline = true }
+link_text = { color = "#cb8f77", italic = true }
+list_marker = "#4e94ce"

crates/zed/assets/themes/dark.toml

@@ -50,3 +50,10 @@ comment = "#6a9955"
 property = "#4e94ce"
 variant = "#4fc1ff"
 constant = "#9cdcfe"
+
+title = { color = "#9cdcfe", weight = "bold" }
+emphasis = "#4ec9b0"
+"emphasis.strong" = { color = "#4ec9b0", weight = "bold" }
+link_uri = { color = "#6a9955", underline = true }
+link_text = { color = "#cb8f77", italic = true }
+list_marker = "#4e94ce"

crates/zed/assets/themes/light.toml

@@ -49,4 +49,11 @@ number = "#b5cea8"
 comment = "#6a9955"
 property = "#4e94ce"
 variant = "#4fc1ff"
-constant = "#9cdcfe"
+constant = "#5a9ccc"
+
+title = { color = "#5a9ccc", weight = "bold" }
+emphasis = "#267f29"
+"emphasis.strong" = { color = "#267f29", weight = "bold" }
+link_uri = { color = "#6a9955", underline = true }
+link_text = { color = "#a82121", italic = true }
+list_marker = "#4e94ce"

crates/zed/languages/markdown/highlights.scm

@@ -0,0 +1,24 @@
+(emphasis) @emphasis
+(strong_emphasis) @emphasis.strong
+
+[
+  (atx_heading)
+  (setext_heading)
+] @title
+
+[
+  (list_marker_plus)
+  (list_marker_minus)
+  (list_marker_star)
+  (list_marker_dot)
+  (list_marker_parenthesis)
+] @list_marker
+
+[
+  (indented_code_block)
+  (fenced_code_block)
+  (code_span)
+] @text.literal
+
+(link_destination) @link_uri
+(link_text) @link_text

crates/zed/src/language.rs

@@ -27,8 +27,11 @@ fn rust() -> Language {
 }
 
 fn markdown() -> Language {
+    let grammar = tree_sitter_markdown::language();
     let config = toml::from_slice(&LanguageDir::get("markdown/config.toml").unwrap().data).unwrap();
-    Language::new(config, None)
+    Language::new(config, Some(grammar))
+        .with_highlights_query(load_query("markdown/highlights.scm").as_ref())
+        .unwrap()
 }
 
 fn load_query(path: &str) -> Cow<'static, str> {