Add glob file type support (#8006)

* Replace FileType::Suffix with FileType::Glob

Suffix is rather limited and cannot be used to match files which have
semantic meaning based on location + file type (for example, Github
Action workflow files). This patch adds support for a Glob FileType to
replace Suffix, which encompasses the existing behavior & adds
additional file matching functionality.

Globs are standard Unix-style path globs, which are matched against the
absolute path of the file. If the configured glob for a language is a
relative glob (that is, it isn't an absolute path or already starts with
a glob pattern), a glob pattern will be prepended to allow matching
relative paths from any directory.

The order of file type matching is also updated to first match on globs
and then on extension. This is necessary as most cases where
glob-matching is useful will have already been matched by an extension
if glob matching is done last.

* Convert file-types suffixes to globs

* Use globs for filename matching

Trying to match the file-type raw strings against both filename and
extension leads to files with the same name as the extension having the
incorrect syntax.

* Match dockerfiles with suffixes

It's common practice to add a suffix to dockerfiles based on their
context, e.g. `Dockerfile.dev`, `Dockerfile.prod`, etc.

* Make env filetype matching more generic

Match on `.env` or any `.env.*` files.

* Update docs

* Use GlobSet to match all file type globs at once

* Update todo.txt glob patterns

* Consolidate language Configuration and Loader creation

This is a refactor that improves the error handling for creating
the `helix_core::syntax::Loader` from the default and user language
configuration.

* Fix integration tests

* Add additional starlark file-type glob

---------

Co-authored-by: Michael Davis <mcarsondavis@gmail.com>

2 files changed, 10 insertions, 10 deletions

diff --git a/helix-term/tests/test/commands/write.rs b/helix-term/tests/test/commands/write.rs
index adc721c5..f65352c7 100644
--- a/helix-term/tests/test/commands/write.rs
+++ b/helix-term/tests/test/commands/write.rs
@@ -315,7 +315,7 @@ async fn test_write_auto_format_fails_still_writes() -> anyhow::Result<()> {
     let mut app = helpers::AppBuilder::new()
         .with_file(file.path(), None)
         .with_input_text("#[l|]#et foo = 0;\n")
-        .with_lang_config(helpers::test_syntax_conf(Some(lang_conf.into())))
+        .with_lang_loader(helpers::test_syntax_loader(Some(lang_conf.into())))
         .build()?;
 
     test_key_sequences(&mut app, vec![(Some(":w<ret>"), None)], false).await?;
diff --git a/helix-term/tests/test/helpers.rs b/helix-term/tests/test/helpers.rs
index 112b5e35..a978f386 100644
--- a/helix-term/tests/test/helpers.rs
+++ b/helix-term/tests/test/helpers.rs
@@ -139,7 +139,7 @@ pub async fn test_key_sequence_with_input_text<T: Into<TestCase>>(
     let test_case = test_case.into();
     let mut app = match app {
         Some(app) => app,
-        None => Application::new(Args::default(), test_config(), test_syntax_conf(None))?,
+        None => Application::new(Args::default(), test_config(), test_syntax_loader(None))?,
     };
 
     let (view, doc) = helix_view::current!(app.editor);
@@ -162,9 +162,9 @@ pub async fn test_key_sequence_with_input_text<T: Into<TestCase>>(
     .await
 }
 
-/// Generates language configs that merge in overrides, like a user language
+/// Generates language config loader that merge in overrides, like a user language
 /// config. The argument string must be a raw TOML document.
-pub fn test_syntax_conf(overrides: Option<String>) -> helix_core::syntax::Configuration {
+pub fn test_syntax_loader(overrides: Option<String>) -> helix_core::syntax::Loader {
     let mut lang = helix_loader::config::default_lang_config();
 
     if let Some(overrides) = overrides {
@@ -172,7 +172,7 @@ pub fn test_syntax_conf(overrides: Option<String>) -> helix_core::syntax::Config
         lang = helix_loader::merge_toml_values(lang, override_toml, 3);
     }
 
-    lang.try_into().unwrap()
+    helix_core::syntax::Loader::new(lang.try_into().unwrap()).unwrap()
 }
 
 /// Use this for very simple test cases where there is one input
@@ -271,7 +271,7 @@ pub fn new_readonly_tempfile() -> anyhow::Result<NamedTempFile> {
 pub struct AppBuilder {
     args: Args,
     config: Config,
-    syn_conf: helix_core::syntax::Configuration,
+    syn_loader: helix_core::syntax::Loader,
     input: Option<(String, Selection)>,
 }
 
@@ -280,7 +280,7 @@ impl Default for AppBuilder {
         Self {
             args: Args::default(),
             config: test_config(),
-            syn_conf: test_syntax_conf(None),
+            syn_loader: test_syntax_loader(None),
             input: None,
         }
     }
@@ -314,8 +314,8 @@ impl AppBuilder {
         self
     }
 
-    pub fn with_lang_config(mut self, syn_conf: helix_core::syntax::Configuration) -> Self {
-        self.syn_conf = syn_conf;
+    pub fn with_lang_loader(mut self, syn_loader: helix_core::syntax::Loader) -> Self {
+        self.syn_loader = syn_loader;
         self
     }
 
@@ -328,7 +328,7 @@ impl AppBuilder {
             bail!("Having the directory {path:?} in args.files[0] is not yet supported for integration tests");
         }
 
-        let mut app = Application::new(self.args, self.config, self.syn_conf)?;
+        let mut app = Application::new(self.args, self.config, self.syn_loader)?;
 
         if let Some((text, selection)) = self.input {
             let (view, doc) = helix_view::current!(app.editor);