From a9263c2239e6d9bbcb05fc814de3869abf849a45 Mon Sep 17 00:00:00 2001
From: Branden Conley <bconley@backflipstudios.com>
Date: Mon, 23 Apr 2018 14:24:23 -0600
Subject: [PATCH] ParserSettings and HelpText assume that Console.WindowWidth
 throws for non-Windows environments, but this is not true in more recent
 versions of Mono (returns 0 instead). This change will cause it to default to
 DefaultMaximumLength in the event that Console.WindowWidth returns 0.

---
 src/CommandLine/ParserSettings.cs | 4 ++++
 src/CommandLine/Text/HelpText.cs  | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/src/CommandLine/ParserSettings.cs b/src/CommandLine/ParserSettings.cs
index 93962566..e0a1423a 100644
--- a/src/CommandLine/ParserSettings.cs
+++ b/src/CommandLine/ParserSettings.cs
@@ -35,6 +35,10 @@ public ParserSettings()
             try
             {
                 maximumDisplayWidth = Console.WindowWidth;
+                if (maximumDisplayWidth < 1)
+                {
+                    maximumDisplayWidth = DefaultMaximumLength;
+                }
             }
             catch (IOException)
             {
diff --git a/src/CommandLine/Text/HelpText.cs b/src/CommandLine/Text/HelpText.cs
index eaa6ade5..24dacbc2 100644
--- a/src/CommandLine/Text/HelpText.cs
+++ b/src/CommandLine/Text/HelpText.cs
@@ -105,6 +105,10 @@ public HelpText(SentenceBuilder sentenceBuilder, string heading, string copyrigh
             try
             {
                 maximumDisplayWidth = Console.WindowWidth;
+                if (maximumDisplayWidth < 1)
+                {
+                    maximumDisplayWidth = DefaultMaximumLength;
+                }
             }
             catch (IOException)
             {