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>

3 files changed, 14 insertions, 20 deletions

diff --git a/helix-term/src/application.rs b/helix-term/src/application.rs
index b5150a13..b844b5f0 100644
--- a/helix-term/src/application.rs
+++ b/helix-term/src/application.rs
@@ -96,11 +96,7 @@ fn setup_integration_logging() {
 }
 
 impl Application {
-    pub fn new(
-        args: Args,
-        config: Config,
-        syn_loader_conf: syntax::Configuration,
-    ) -> Result<Self, Error> {
+    pub fn new(args: Args, config: Config, lang_loader: syntax::Loader) -> Result<Self, Error> {
         #[cfg(feature = "integration")]
         setup_integration_logging();
 
@@ -126,7 +122,7 @@ impl Application {
             })
             .unwrap_or_else(|| theme_loader.default_theme(true_color));
 
-        let syn_loader = std::sync::Arc::new(syntax::Loader::new(syn_loader_conf));
+        let syn_loader = std::sync::Arc::new(lang_loader);
 
         #[cfg(not(feature = "integration"))]
         let backend = CrosstermBackend::new(stdout(), &config.editor);
@@ -394,10 +390,8 @@ impl Application {
 
     /// refresh language config after config change
     fn refresh_language_config(&mut self) -> Result<(), Error> {
-        let syntax_config = helix_core::config::user_syntax_loader()
-            .map_err(|err| anyhow::anyhow!("Failed to load language config: {}", err))?;
-
-        self.syn_loader = std::sync::Arc::new(syntax::Loader::new(syntax_config));
+        let lang_loader = helix_core::config::user_lang_loader()?;
+        self.syn_loader = std::sync::Arc::new(lang_loader);
         self.editor.syn_loader = self.syn_loader.clone();
         for document in self.editor.documents.values_mut() {
             document.detect_language(self.syn_loader.clone());
diff --git a/helix-term/src/health.rs b/helix-term/src/health.rs
index 5f201926..0bbb5735 100644
--- a/helix-term/src/health.rs
+++ b/helix-term/src/health.rs
@@ -2,7 +2,7 @@ use crossterm::{
     style::{Color, Print, Stylize},
     tty::IsTty,
 };
-use helix_core::config::{default_syntax_loader, user_syntax_loader};
+use helix_core::config::{default_lang_config, user_lang_config};
 use helix_loader::grammar::load_runtime_file;
 use helix_view::clipboard::get_clipboard_provider;
 use std::io::Write;
@@ -128,7 +128,7 @@ pub fn languages_all() -> std::io::Result<()> {
     let stdout = std::io::stdout();
     let mut stdout = stdout.lock();
 
-    let mut syn_loader_conf = match user_syntax_loader() {
+    let mut syn_loader_conf = match user_lang_config() {
         Ok(conf) => conf,
         Err(err) => {
             let stderr = std::io::stderr();
@@ -141,7 +141,7 @@ pub fn languages_all() -> std::io::Result<()> {
                 err
             )?;
             writeln!(stderr, "{}", "Using default language config".yellow())?;
-            default_syntax_loader()
+            default_lang_config()
         }
     };
 
@@ -234,7 +234,7 @@ pub fn language(lang_str: String) -> std::io::Result<()> {
     let stdout = std::io::stdout();
     let mut stdout = stdout.lock();
 
-    let syn_loader_conf = match user_syntax_loader() {
+    let syn_loader_conf = match user_lang_config() {
         Ok(conf) => conf,
         Err(err) => {
             let stderr = std::io::stderr();
@@ -247,7 +247,7 @@ pub fn language(lang_str: String) -> std::io::Result<()> {
                 err
             )?;
             writeln!(stderr, "{}", "Using default language config".yellow())?;
-            default_syntax_loader()
+            default_lang_config()
         }
     };
 
diff --git a/helix-term/src/main.rs b/helix-term/src/main.rs
index 132ee796..fbe1a846 100644
--- a/helix-term/src/main.rs
+++ b/helix-term/src/main.rs
@@ -145,18 +145,18 @@ FLAGS:
         }
     };
 
-    let syn_loader_conf = helix_core::config::user_syntax_loader().unwrap_or_else(|err| {
-        eprintln!("Bad language config: {}", err);
+    let lang_loader = helix_core::config::user_lang_loader().unwrap_or_else(|err| {
+        eprintln!("{}", err);
         eprintln!("Press <ENTER> to continue with default language config");
         use std::io::Read;
         // This waits for an enter press.
         let _ = std::io::stdin().read(&mut []);
-        helix_core::config::default_syntax_loader()
+        helix_core::config::default_lang_loader()
     });
 
     // TODO: use the thread local executor to spawn the application task separately from the work pool
-    let mut app = Application::new(args, config, syn_loader_conf)
-        .context("unable to create new application")?;
+    let mut app =
+        Application::new(args, config, lang_loader).context("unable to create new application")?;
 
     let exit_code = app.run(&mut EventStream::new()).await?;