From 6181781f3d99c5a1750debce6840b4aad895086f Mon Sep 17 00:00:00 2001
From: Maxime Coste <frrrwww@gmail.com>
Date: Fri, 20 May 2016 09:41:29 +0100
Subject: [PATCH] Change dir to $HOME when no parameters are given to cd

Fixes #678
---
 src/commands.cc | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/commands.cc b/src/commands.cc
index ce240c94..56a94430 100644
--- a/src/commands.cc
+++ b/src/commands.cc
@@ -1857,7 +1857,7 @@ const CommandDesc change_working_directory_cmd = {
     "cd",
     nullptr,
     "cd <dir>: change server working directory to <dir>",
-    single_name_param,
+    single_optional_name_param,
     CommandFlags::None,
     CommandHelper{},
     PerArgumentCommandCompleter{{
@@ -1871,8 +1871,10 @@ const CommandDesc change_working_directory_cmd = {
     }},
     [](const ParametersParser& parser, Context&, const ShellContext&)
     {
-        if (chdir(parse_filename(parser[0]).c_str()) != 0)
-            throw runtime_error(format("cannot change to directory '{}'", parser[0]));
+
+        StringView target = parser.positional_count() == 1 ? parser[0] : "~";
+        if (chdir(parse_filename(target).c_str()) != 0)
+            throw runtime_error(format("cannot change to directory '{}'", target));
         for (auto& buffer : BufferManager::instance())
             buffer->update_display_name();
     }