From fb0e218eb1d17ee850d5c68f43154f4828d67ef7 Mon Sep 17 00:00:00 2001
From: Alex Jordan <v-alexjo@microsoft.com>
Date: Mon, 8 Aug 2016 21:57:25 -0700
Subject: [PATCH] Fix crash on file name being too long in prompt

---
 src/Microsoft.PowerShell.PSReadLine/ReadLine.cs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/Microsoft.PowerShell.PSReadLine/ReadLine.cs b/src/Microsoft.PowerShell.PSReadLine/ReadLine.cs
index 609a31958..9c56bf928 100644
--- a/src/Microsoft.PowerShell.PSReadLine/ReadLine.cs
+++ b/src/Microsoft.PowerShell.PSReadLine/ReadLine.cs
@@ -557,13 +557,18 @@ namespace Microsoft.PowerShell
             _visualSelectionCommandCount = 0;
             _statusIsErrorMessage = false;
 
-            _consoleBuffer = ReadBufferLines(_initialY, 1 + Options.ExtraPromptLineCount);
+            
 #if UNIX // TODO: not necessary if ReadBufferLines worked, or if rendering worked on spans instead of complete lines
             string newPrompt = GetPrompt();
+            var bufferLineCount = (newPrompt.Length) / (_console.BufferWidth) + 1;
+            _consoleBuffer = ReadBufferLines(_initialY, bufferLineCount);
+            
             for (int i=0; i<newPrompt.Length; ++i)
             {
                 _consoleBuffer[i].UnicodeChar = newPrompt[i];
             }
+#else
+            _consoleBuffer = ReadBufferLines(_initialY, 1 + Options.ExtraPromptLineCount);
 #endif
             _lastRenderTime = Stopwatch.StartNew();