Add --config option

Add book entry

Change to --edit-config

book/src/configuration.md

@@ -5,6 +5,8 @@ To override global configuration parameters, create a `config.toml` file located
 * Linux and Mac: `~/.config/helix/config.toml`
 * Windows: `%AppData%\helix\config.toml`
 
+> Note: You may use `hx --edit-config` to create and edit the `config.toml` file.
+
 Example config:
 
 ```toml

helix-term/src/application.rs

@@ -114,6 +114,9 @@ impl Application {
             editor.open(path, Action::VerticalSplit)?;
             // Unset path to prevent accidentally saving to the original tutor file.
             doc_mut!(editor).set_path(None)?;
+        } else if args.config {
+            let path = conf_dir.join("config.toml");
+            editor.open(path, Action::VerticalSplit)?;
         } else if !args.files.is_empty() {
             let first = &args.files[0].0; // we know it's not empty
             if first.is_dir() {

helix-term/src/args.rs

@@ -9,6 +9,7 @@ pub struct Args {
     pub load_tutor: bool,
     pub verbosity: u64,
     pub files: Vec<(PathBuf, Position)>,
+    pub config: bool,
 }
 
 impl Args {
@@ -25,6 +26,7 @@ impl Args {
                 "--version" => args.display_version = true,
                 "--help" => args.display_help = true,
                 "--tutor" => args.load_tutor = true,
+                "--edit-config" => args.config = true,
                 arg if arg.starts_with("--") => {
                     return Err(Error::msg(format!(
                         "unexpected double dash argument: {}",

helix-term/src/main.rs

@@ -60,6 +60,7 @@ ARGS:
 
 FLAGS:
     -h, --help       Prints help information
+    --edit-config    Opens the helix config file
     --tutor          Loads the tutorial
     -v               Increases logging verbosity each use for up to 3 times
                      (default file: {})