Fix incorrect config path in --help and manpage

Fixes #3154.

CHANGELOG.md

@@ -6,6 +6,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## 0.4.2-dev
 
+### Fixed
+
+- Incorrect default config path in `--help` on Windows and macOS
+
 ## 0.4.1
 
 ### Packaging

alacritty/src/cli.rs

@@ -23,6 +23,13 @@ use alacritty_terminal::index::{Column, Line};
 
 use crate::config::Config;
 
+#[cfg(not(any(target_os = "macos", windows)))]
+const CONFIG_PATH: &str = "$XDG_CONFIG_HOME/alacritty/alacritty.yml";
+#[cfg(windows)]
+const CONFIG_PATH: &str = "%APPDATA%\\alacritty\\alacritty.yml";
+#[cfg(target_os = "macos")]
+const CONFIG_PATH: &str = "$HOME/.config/alacritty/alacritty.yml";
+
 /// Options specified on the command line
 pub struct Options {
     pub live_config_reload: Option<bool>,
@@ -158,8 +165,7 @@ impl Options {
                     .help("Start the shell in the specified working directory"),
             )
             .arg(Arg::with_name("config-file").long("config-file").takes_value(true).help(
-                "Specify alternative configuration file [default: \
+                &format!("Specify alternative configuration file [default: {}]", CONFIG_PATH)
-                 $XDG_CONFIG_HOME/alacritty/alacritty.yml]",
             ))
             .arg(
                 Arg::with_name("command")

extra/alacritty.man

@@ -49,7 +49,15 @@ Defines the window class hint on Linux [default: Alacritty,Alacritty ]
 Command and args to execute (must be last argument)
 .TP
 \fB\-\-config\-file\fR <config\-file>
-Specify alternative configuration file [default: $XDG_CONFIG_HOME/alacritty/alacritty.yml]
+Specify alternative configuration file
+
+Alacritty looks for the configuration file at the following paths:
+    1. $XDG_CONFIG_HOME/alacritty/alacritty.yml
+    2. $XDG_CONFIG_HOME/alacritty.yml
+    3. $HOME/.config/alacritty/alacritty.yml
+    4. $HOME/.alacritty.yml
+
+On Windows, the configuration file is located at %APPDATA%\\alacritty\\alacritty.yml.
 .TP
 \fB\-d\fR, \fB\-\-dimensions\fR <columns> <lines>
 Defines the window dimensions. Falls back to size specified by window manager if set to 0x0 [default: 0x0]