Allows using NEOVIDE_WSL or config file to set wsl (#1942)

* Allow using env var or config file for setting wsl

* add wsl option in config doc

src/cmd_line.rs

@@ -45,7 +45,7 @@ pub struct CmdLineSettings {
     pub server: Option<String>,
 
     /// Run NeoVim in WSL rather than on the host
-    #[arg(long)]
+    #[arg(long, env = "NEOVIDE_WSL")]
     pub wsl: bool,
 
     /// Which window decorations to use (do note that the window might not be resizable

src/settings/config.rs

@@ -31,6 +31,7 @@ pub fn config_path() -> PathBuf {
 
 #[derive(Debug, Deserialize, Default)]
 pub struct Config {
+    pub wsl: Option<bool>,
     pub multigrid: Option<bool>,
     pub maximized: Option<bool>,
     pub vsync: Option<bool>,
@@ -52,6 +53,9 @@ impl Config {
     }
 
     fn write_to_env(&self) {
+        if let Some(wsl) = self.wsl {
+            env::set_var("NEOVIDE_WSL", wsl.to_string());
+        }
         if let Some(multigrid) = self.multigrid {
             env::set_var("NEOVIDE_MULTIGRID", multigrid.to_string());
         }

website/docs/config-file.md

@@ -22,6 +22,7 @@ overridden by command line arguments.
 Settings currently available in the config file with default values:
 
 ```toml
+wsl = false
 multigrid = false
 vsync = true
 maximized = false