Try to load language for --do-you-understand

Cargo.lock

@@ -448,12 +448,6 @@ version = "1.0.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7ffc183a10b4478d04cbbbfc96d0873219d962dd5accaff2ffbd4ceb7df837f4"
 
-[[package]]
-name = "ryu"
-version = "1.0.15"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1ad4cc8da4ef723ed60bced201181d83791ad433213d8c24efffda1eec85d741"
-
 [[package]]
 name = "serde"
 version = "1.0.192"
@@ -474,17 +468,6 @@ dependencies = [
  "syn 2.0.39",
 ]
 
-[[package]]
-name = "serde_json"
-version = "1.0.108"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3d1c7e3eac408d115102c4c24ad393e0821bb3a5df4d506a80f85f7a742a526b"
-dependencies = [
- "itoa",
- "ryu",
- "serde",
-]
-
 [[package]]
 name = "slog"
 version = "2.7.0"
@@ -724,15 +707,12 @@ dependencies = [
 
 [[package]]
 name = "tree-sitter"
-version = "0.6.3"
+version = "0.20.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "376e181cb69da67bad2d69806cf2500656fd68123c526a61e5cbbfc65110c5b0"
+checksum = "e747b1f9b7b931ed39a548c1fae149101497de3c1fc8d9e18c62c1a66c683d3d"
 dependencies = [
  "cc",
  "regex",
- "serde",
- "serde_derive",
- "serde_json",
 ]
 
 [[package]]

Cargo.toml

@@ -12,7 +12,7 @@ slog = { version = "2.5.2", features = ["release_max_level_debug"] }
 slog-scope = "4.3.0"
 sloggers = "0.3.5"
 toml = "0.5.6"
-tree-sitter = "0.6.0"
+tree-sitter = "0.20.10"
 
 # [profile.release]
 # lto = true

src/main.rs

@@ -37,7 +37,16 @@ fn main() {
 
     if let Some(filetype) = matches.value_of("do-you-understand") {
         let language = ffi::filetype_to_language(filetype);
-        std::process::exit(if language.is_some() { 0 } else { 1 });
+        if let Some(language) = language {
+            eprintln!("Known language. Trying to load");
+            let mut parser = Parser::new();
+            parser.set_language(language).unwrap();
+            eprintln!("Loaded successfully");
+            std::process::exit(0);
+        } else {
+            eprintln!("Unknown language");
+            std::process::exit(1);
+        }
     }
 
     let config = if let Some(config_path) = matches.value_of("config") {