From fb2be5c404889ced14cbce5dc327d5dc277f3b4c Mon Sep 17 00:00:00 2001
From: Andreas Kling <kling@serenityos.org>
Date: Mon, 30 Mar 2020 18:08:47 +0200
Subject: [PATCH] Shell: Shorten $HOME to '~' in shell prompts

The "\w" substitution in shell prompts now uses '~' to represent the
user's home directory (technically, whatever $HOME contains.)
---
 Shell/main.cpp | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/Shell/main.cpp b/Shell/main.cpp
index c6b201c99c..bc8ef48dc9 100644
--- a/Shell/main.cpp
+++ b/Shell/main.cpp
@@ -88,9 +88,16 @@ static String prompt()
             case 'h':
                 builder.append(g.hostname);
                 break;
-            case 'w':
-                builder.append(g.cwd);
+            case 'w': {
+                String home_path = getenv("HOME");
+                if (g.cwd.starts_with(home_path)) {
+                    builder.append('~');
+                    builder.append(g.cwd.substring_view(home_path.length(), g.cwd.length() - home_path.length()));
+                } else {
+                    builder.append(g.cwd);
+                }
                 break;
+            }
             case 'p':
                 builder.append(g.uid == 0 ? '#' : '$');
                 break;