From 07291a53133e92337e9d2d06b1e92de3c764362d Mon Sep 17 00:00:00 2001
From: Nikolaj Olsson <nikse.dk@gmail.com>
Date: Wed, 13 Feb 2019 18:37:00 +0100
Subject: [PATCH] Allow dash in number for WebVTT files - thx Maksim :)

---
 libse/SubtitleFormats/WebVTT.cs                   | 2 +-
 libse/SubtitleFormats/WebVTTFileWithLineNumber.cs | 5 ++---
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/libse/SubtitleFormats/WebVTT.cs b/libse/SubtitleFormats/WebVTT.cs
index c51045978..88f92922b 100644
--- a/libse/SubtitleFormats/WebVTT.cs
+++ b/libse/SubtitleFormats/WebVTT.cs
@@ -185,7 +185,7 @@ namespace Nikse.SubtitleEdit.Core.SubtitleFormats
                 {
                     subtitle.Header = "WEBVTT";
                 }
-                else if (p != null && hadEmptyLine && Utilities.IsInteger(line) &&
+                else if (p != null && hadEmptyLine && Utilities.IsInteger(line.RemoveChar('-')) &&
                          (RegexTimeCodesMiddle.IsMatch(next) ||
                           RegexTimeCodesShort.IsMatch(next) ||
                           RegexTimeCodes.IsMatch(next)))
diff --git a/libse/SubtitleFormats/WebVTTFileWithLineNumber.cs b/libse/SubtitleFormats/WebVTTFileWithLineNumber.cs
index 4da6cc865..6d61a38b1 100644
--- a/libse/SubtitleFormats/WebVTTFileWithLineNumber.cs
+++ b/libse/SubtitleFormats/WebVTTFileWithLineNumber.cs
@@ -60,7 +60,6 @@ namespace Nikse.SubtitleEdit.Core.SubtitleFormats
             Paragraph p = null;
             string positionInfo = string.Empty;
             bool hadEmptyLine = false;
-            int numbers = 0;
             for (var index = 0; index < lines.Count; index++)
             {
                 string line = lines[index];
@@ -112,12 +111,12 @@ namespace Nikse.SubtitleEdit.Core.SubtitleFormats
                 {
                     subtitle.Header = "WEBVTT FILE";
                 }
-                else if (p != null && hadEmptyLine && Utilities.IsInteger(line) &&
+                else if (p != null && hadEmptyLine && Utilities.IsInteger(line.RemoveChar('-')) &&
                          (RegexTimeCodesMiddle.IsMatch(next) ||
                           RegexTimeCodesShort.IsMatch(next) ||
                           RegexTimeCodes.IsMatch(next)))
                 {
-                    numbers++;
+                    // line number
                 }
                 else if (p != null)
                 {