Fix crash with invalid working directory

CHANGELOG.md

@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Pressing additional modifiers for mouse bindings will no longer trigger them
 - Renamed `WINIT_HIDPI_FACTOR` environment variable to `WINIT_X11_SCALE_FACTOR`
+- Print an error instead of crashing, when startup working directory is invalid
 
 ### Fixed
 

alacritty/src/cli.rs

@@ -16,7 +16,7 @@ use std::cmp::max;
 use std::path::PathBuf;
 
 use clap::{crate_authors, crate_description, crate_name, crate_version, App, Arg};
-use log::{self, LevelFilter};
+use log::{self, error, LevelFilter};
 
 use alacritty_terminal::config::{Delta, Dimensions, Shell, DEFAULT_NAME};
 use alacritty_terminal::index::{Column, Line};
@@ -260,12 +260,14 @@ impl Options {
     }
 
     pub fn into_config(self, mut config: Config) -> Config {
+        match self.working_dir.or_else(|| config.working_directory.take()) {
+            Some(ref wd) if !wd.is_dir() => error!("Unable to set working directory to {:?}", wd),
+            wd => config.working_directory = wd,
+        }
+
         if let Some(lcr) = self.live_config_reload {
             config.set_live_config_reload(lcr);
         }
-        if let Some(wd) = self.working_dir {
-            config.set_working_directory(Some(wd));
-        }
         config.shell = self.command.or(config.shell);
 
         config.hold = self.hold;

alacritty_terminal/src/config/mod.rs

@@ -15,7 +15,7 @@
 use std::borrow::Cow;
 use std::collections::HashMap;
 use std::fmt::Display;
-use std::path::{Path, PathBuf};
+use std::path::PathBuf;
 
 use log::error;
 use serde::{Deserialize, Deserializer};
@@ -119,7 +119,7 @@ pub struct Config<T> {
 
     /// Shell startup directory
     #[serde(default, deserialize_with = "option_explicit_none")]
-    working_directory: Option<PathBuf>,
+    pub working_directory: Option<PathBuf>,
 
     /// Debug options
     #[serde(default, deserialize_with = "failure_default")]
@@ -207,16 +207,6 @@ impl<T> Config<T> {
     pub fn background_opacity(&self) -> f32 {
         self.background_opacity.0
     }
-
-    #[inline]
-    pub fn working_directory(&self) -> Option<&Path> {
-        self.working_directory.as_ref().map(|path_buf| path_buf.as_path())
-    }
-
-    #[inline]
-    pub fn set_working_directory(&mut self, working_directory: Option<PathBuf>) {
-        self.working_directory = working_directory;
-    }
 }
 
 #[serde(default)]

alacritty_terminal/src/tty/unix.rs

@@ -208,7 +208,7 @@ pub fn new<C>(config: &Config<C>, size: &SizeInfo, window_id: Option<usize>) ->
     }
 
     // Handle set working directory option
-    if let Some(ref dir) = config.working_directory() {
+    if let Some(dir) = &config.working_directory {
         builder.current_dir(dir);
     }
 

alacritty_terminal/src/tty/windows/conpty.rs

@@ -204,9 +204,9 @@ pub fn new<C>(config: &Config<C>, size: &SizeInfo, _window_id: Option<usize>) ->
 
     let cmdline = win32_string(&cmdline(&config));
     let cwd = config
-        .working_directory()
-        .map(|dir| dir.canonicalize().unwrap())
-        .map(|path| win32_string(&path));
+        .working_directory
+        .as_ref()
+        .map(|pb| win32_string(&pb.as_path().canonicalize().unwrap()));
 
     let mut proc_info: PROCESS_INFORMATION = Default::default();
     unsafe {

alacritty_terminal/src/tty/windows/winpty.rs

@@ -42,7 +42,7 @@ pub fn new<C>(config: &Config<C>, size: &SizeInfo, _window_id: Option<usize>) ->
     let (conin, conout) = (agent.conin_name(), agent.conout_name());
 
     let cmdline = cmdline(&config);
-    let cwd = config.working_directory().map(|dir| dir.canonicalize().unwrap());
+    let cwd = config.working_directory.as_ref().map(|pb| pb.as_path().canonicalize().unwrap());
 
     // Spawn process
     let spawnconfig = SpawnConfig::new(